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How to Limit Eye Fatigue from Working at a Computer All Day

I can’t speak for anyone else, but I know that after staring at my computer for 6 hours, my vision can feel horribly blurred and sluggish. As someone who doesn?t need corrective eyewear, I sometimes get the feeling that my daily computer work is shortening my lens-free years one day at a time.

But we live in a technological world and many of us?have to work with technology day after day.?How can we keep our eyes healthy in such an unnatural environment??If you?re concerned about the damage, stress and eye fatigue you experience from working on a computer all day, try these 5 tips to help keep your eyesight healthy…

Incorporate eye exercises.

Looking at a screen encourages us not to blink?while?aggressively holding one focus for long periods of time. To an eye, that is exhausting. To prevent eyestrain, look at something that is at least 20 feet away (not a screen) for at least 20 seconds every 20 minutes. Yes, every 20 minutes. Set a timer on your phone and use that time to take a few deep breaths and recenter yourself. Once an hour, take a bonus break. Get up, stretch your legs and walk around for a few minutes. Not only will you feel better and more peppy, but you’ll be saving your eyes in the long run.

Limit unnecessary technology time.

Computers emit blue light.?Blue light is the shortest visible wavelength and is more challenging on the eyes than long hues like red. If you have to do all of your work, day in and out, on a screen, you need to?consider ditching the screens when you get off work. I know, Netflix is calling your name, but try to make Netflix nights a treat more than a habit. Instead, listen to music/podcasts, read a book or magazine, play a game with your family or do some journaling. Nighttime screentime is damaging to sleep cycles anyways, so you are better off ridding yourself of the habit in the name of healthier eyes and deeper sleep.

Adjust your display.

You don’t need your display on full brightness. Dim it down to a level where you can feel your eyes relax. Try using plugins like f.lux or the “night shift” function on macs to reduce the amount of blue light that is pummeling your pupils at all hours of the day. Also make sure you’ve customized your text size preferences so that you aren’t squinting and struggling to read important documents on your screen.

Go outside often.

When you are zombie-ing in front of a screen, it is hugely important to make sure you get outside into some daylight at least once throughout the day. Maybe take your lunch break on a park bench outside. Maybe take a walking meeting. Whatever it is, find more ways to expose your eyes to the natural, wide spectrum of light outside.

If you work under?fluorescent lights, try switching your area to full-spectrum?fluorescents to better mimic outside light. However, when using a computer for long stretches, turn overhead lights down or off and close the shades to minimize computer glare. You want to keep the surrounding area soft and about half as bright as your screen.?

Eat your veggies.

You know how your mom told you to eat your carrots so you would have strong eyes? The antioxidants in certain vegetables may have the power to counteract the negative effects of technological eye fatigue. Lutein and zeaxanthin specifically are potent antioxidants generally found in the retina. In fact, lutein has been shown to reduce macular degeneration.

Not only do these yellow-hued antioxidants prevent damage, but they absorb the blue light before it enters the retina, reducing overall stress. You can find these antioxidants in?egg yolks, yellow corn, orange peppers, squash and in smaller quantities in leafy greens. What about carrots, you ask? Carrots are high in vitamin A, which is an essential nutrient for healthy vision, but it seems like the carrot claim may be more fiction than fact.

What do you do to reduce eyestrain when you are on a computer all day? Do you find that you just try to charge through it? Or do you thrive with regular breaks? Share your habits and advice with the community below!??

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Disclaimer: The views expressed above are solely those of the author and may not reflect those of Care2, Inc., its employees or advertisers.

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How to Limit Eye Fatigue from Working at a Computer All Day

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The United States could become the world’s biggest oil producer. It’s been a while.

The Federal Energy Regulatory Commission granted the PennEast Pipeline its certificate of public convenience and necessity on Friday, which also allows the company to acquire land through eminent domain.

The proposed $1 billion pipeline would run nearly 120 miles from Pennsylvania to New Jersey and transport up to 1 billion cubic feet of natural gas a day. Its opponents say it would threaten the health and safety of nearby communities and endanger natural and historic resources. Proponents maintain that the pipeline is an economic boon that will lower energy costs for residents.

After getting the OK from FERC, the company moved up its estimated in-service date to 2019, with construction to begin this year. But it won’t necessarily be an easy road ahead. The pipeline still needs permits from the State of New Jersey, Army Corps of Engineers, and the Delaware River Basin Commission. And while Chris Christie was a big fan of the pipeline, newly elected Governor Phil Murphy ran a campaign promising a green agenda and has already voiced opposition.

Pipeline opponents are demonstrating this afternoon and taking the developers to court. “It’s just the beginning. New Jersey doesn’t need or want this damaging pipeline, and has the power to stop it when it faces a more stringent state review,” Tom Gilbert, campaign director of the New Jersey Conservation Foundation, said in a statement.

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The United States could become the world’s biggest oil producer. It’s been a while.

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Whole Earth Discipline – Stewart Brand

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Whole Earth Discipline

Why Dense Cities, Nuclear Power, Transgenic Crops, RestoredWildlands, and Geoengineering Are Necessary

Stewart Brand

Genre: Science & Nature

Price: $1.99

Publish Date: October 15, 2009

Publisher: Penguin Publishing Group

Seller: Penguin Group (USA) Inc.


An icon of the environmental movement outlines a provocative approach for reclaiming our planet According to Stewart Brand, a lifelong environmentalist who sees everything in terms of solvable design problems, three profound transformations are under way on Earth right now. Climate change is real and is pushing us toward managing the planet as a whole. Urbanization?half the world?s population now lives in cities, and eighty percent will by midcentury?is altering humanity?s land impact and wealth. And biotechnology is becoming the world?s dominant engineering tool. In light of these changes, Brand suggests that environmentalists are going to have to reverse some longheld opinions and embrace tools that they have traditionally distrusted. Only a radical rethinking of traditional green pieties will allow us to forestall the cataclysmic deterioration of the earth?s resources. Whole Earth Discipline shatters a number of myths and presents counterintuitive observations on why cities are actually greener than countryside, how nuclear power is the future of energy, and why genetic engineering is the key to crop and land management. With a combination of scientific rigor and passionate advocacy, Brand shows us exactly where the sources of our dilemmas lie and offers a bold and inventive set of policies and solutions for creating a more sustainable society. In the end, says Brand, the environmental movement must become newly responsive to fast-moving science and take up the tools and discipline of engineering. We have to learn how to manage the planet?s global-scale natural infrastructure with as light a touch as possible and as much intervention as necessary.

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Whole Earth Discipline – Stewart Brand

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4 ways the Republican tax plan could harm the planet.

EPA Administrator Scott Pruitt’s strategy to bring the public discussion, which ended Wednesday, “to the heart of coal country to hear from those most impacted” backfired when a few legacy coal miners like Nick Mullins of Kentucky came to testify.

“I don’t want [my son] to be a sixth-generation coal miner,” Mullins said, adding that the plan could lead to diverse job opportunities that won’t endanger his family’s health. When Obama announced the Clean Power Plan in 2015, the EPA estimated it could prevent up to 3,600 premature deaths and 90,000 childhood asthma attacks.

As Oklahoma’s attorney general, Pruitt sued the EPA to stop the plan’s implementation. The rules would have forced states to cut emissions by 32 percent below 2005 levels by 2030. It was a big piece of the United States’ compliance with the Paris climate accord, which President Trump now plans to leave.

“As long as I can draw a breath, I’m going to keep working to fight climate change and protect the land and country I love,” said Stanley Sturgill, a Kentucky resident living with black lung disease after more than 40 years as a coal miner. “For the sake of my grandchildren and yours, I call on you to strengthen, not repeal, the Clean Power Plan.”

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4 ways the Republican tax plan could harm the planet.

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An erupting Indonesian volcano may alter global climate.

After Puerto Rico canceled its controversial contract with the small Montana company last month, Whitefish had agreed to continue repairs on the island’s devastated grid until Nov. 30. But on Monday, the company paused work 10 days early. According to Whitefish, PREPA, Puerto Rico’s government-owned utility, owed it $83 million.

“It may have not been the best business decision coming to work for a bankrupt island,” Whitefish CEO Andy Techmanski told CNN. PREPA was $9 billion in debt before Hurricane Maria.

Whitefish claims that some of its contractors and subcontractors are going unpaid due to PREPA’s delayed payments. Meanwhile, PREPA says it paused payment to Whitefish on Nov. 16 at the request of a subcontractor claiming Whitefish owed it money. Sounds like a chicken-and-egg situation?

Congress and the FBI are currently investigating the $300 million Whitefish contract, which drew scrutiny for its anti-auditing measure and unusually high fees, among other things. A congressional hearing last week found that PREPA ignored lawyers’ advice in signing the deal in the first place. Soon after the hearing, PREPA’s CEO resigned.

Puerto Rico could use an end to the Whitefish drama — and the power outages. Two months after Hurricane Maria, less than half of the power has been restored and entire communities are still living without electricity.

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An erupting Indonesian volcano may alter global climate.

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Another side effect of Puerto Rico’s power problems: Scientists struggle to do their work.

Nearly two months after Hurricane Maria, public health researchers in Puerto Rico are limited by the same lack of power, clean water, and infrastructure they are there to study.

Puerto Rico–born José Cordero is one such scientist. In the journal Nature, he describes leading a team through the devastated landscape to collect data on how drinking water contamination affects pregnant women. The scientists have to hurry to finish their work everyday, before night falls across the largely powerless island. Limited telephone access makes it difficult to get in touch with subjects.

Cordero’s project started six years ago to focus on water pollution and pre-term births, but this year’s hurricane has changed both the focus and the level of difficulty of the work. Other researchers have been hampered by hospitals that can’t administer routine tests and hurricane-damaged equipment, making it difficult to collect data on how air and water pollution are affecting health.

Still, Cordero’s team has managed to contact several hundred woman and collect samples of groundwater and tap water from homes near flooded Superfund sites. As he told Nature: “The kind of work we’re doing … has to be done now, because a few years from now, it’s too late.”

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Another side effect of Puerto Rico’s power problems: Scientists struggle to do their work.

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Tesla and solar groups put Puerto Rico back on the grid

It was a transaction concocted on Twitter — and in a few short weeks, declared official: Tesla is helping to bring power back to Puerto Rico.

Early this month, Elon Musk touted his company’s work building solar-plus-battery systems for small islands like Kauai in Hawaii and Ta’u in American Samoa. He suggested a similar setup could work for Puerto Rico. The U.S. territory’s governor, Ricardo Rosselló, tweeted that he was game. Musk replied quickly: “Hopefully, Tesla can be helpful.”

After earlier reports of the company’s batteries arriving at San Juan’s port, Tesla announced today that it has started constructing its first microgrid installation, laying out a solar field and setting up its refrigerator-sized Powerpack batteries to supply electricity to a children’s hospital in the Puerto Rican capital.

More than a month after Hurricane Maria destroyed swaths of the island’s electrical grid, 85 percent of Puerto Rico is still without power. Total grid repair costs are estimated at $5 billion — an especially steep price for a public utility already $9 billion in debt. The lack of power is especially dire for hospitals, where unreliable electricity may spoil medicines that require refrigeration and complicate crucial medical procedures. The results could be deadlier than the storm itself, but solar power could help head off further disaster.

The idea that solar could serve as a viable source of emergency relief is new. Sure, renewable technologies have proliferated and become more affordable, but there’s a tried-and-true response to natural disasters: Fall back on diesel generators and fuel until utilities have a chance to restore grid power.

This has largely been the pattern in post-Maria Puerto Rico. One hardware store told the New York Times it was selling up to 300 generators a day. FEMA claims it has installed more generators in Puerto Rico than in hurricane-ravaged parts of Texas and Florida combined. But generators are expensive, inefficient, and prone to failure. And burning diesel in homes comes with health risks like carbon monoxide poisoning.

By contrast, a microgrid setup — that is, a combination of solar panels, battery storage, and electrical inverters that doesn’t require input from the main power grid — can potentially take immediate effect, providing reliable electricity with no pollution. And, once installed, these self-contained systems could help eliminate the rolling blackouts that were a problem for Puerto Rico’s major utility even before Maria.

Tesla is only the most prominent company to bypass the conventional avenues of rebuilding to install renewable power and batteries. Other companies and nonprofits have been marshalling resources to fill the void left by federal relief efforts. German renewable energy outfit Sonnen has pledged to build microgrids in priority areas, working with local partner Pura Energia to install donated batteries to power first aid and community centers. Another group, Resilient Power Puerto Rico, is distributing solar generators to remote communities, where they can serve as hubs for immediate necessities like charging phones and filtering water.

Marco Krapels, founder of the nonprofit Empowered by Light, traveled with a solar installation team to Puerto Rico in early October to deploy solar-plus-battery microgrid systems on fire stations. The nonprofit partnered with local firefighters to quickly cut through red tape paralyzing much of the disaster response.

“It takes only 48 hours to deploy once it arrives in the San Juan airport,” Krapels says of the standalone systems. “The firefighters, who have 18 flat-bed trucks, pulled up to our cargo plane; three hours later we were installing the system; and 48 hours later we’re done.”

The microgrid systems provide electricity and communications to the fire stations, as well as water purification technology that can provide up to 250 gallons of drinkable water a day — crucial on an island where 1 in 3 residents currently lack access to clean water.

There are 95 fire stations in Puerto Rico, Krapels says, and he estimates it will take just under $5 million for Empowered by Light to outfit them all. So far, the nonprofit has transformed two stations, one in the low-income Obrero neighborhood of San Juan and one in the town of Utuado, in the remote center of the island. After both installations, Krapels says, the local fire station was the only building with the lights on after dark — outlying and underserved communities are always among the last to receive emergency relief.

“There are parts of the island that are so destroyed that there is no grid,” Krapels says. “There is nothing to fix: The transformers are all burnt, the poles are gone, the wires are laying on the street.”

As much as 80 percent of the island’s high-power transmission lines were destroyed, Bloomberg reported, and even optimistic estimates of repair work have a majority of the island off the grid until late this year.

In the coming months, as communities and companies work to rebuild that infrastructure, there will be an opportunity to make the island more resilient. Companies like Tesla offer one path to less vulnerable electricity infrastructure. Meanwhile, organizations like Resilient Power Puerto Rico emphasize the importance of economic resilience, too. The New York-based founders want to put power in the hands of the island’s residents, modeled after similar efforts in the Rockaways post-Sandy. The nonprofit has ambitions to establish 100 solar towns, a robust green economy, and more electrical independence for all.

“If we’re going to rethink energy in Puerto Rico, let’s really empower people to deploy their own distributed renewable generation and storage,” Krapels says. “The sun is there every day, and it’s going to shine for the next 5 billion years.”

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Tesla and solar groups put Puerto Rico back on the grid

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‘Dammit, this is not a good news story,’ San Juan mayor responds to Trump official.

The recovery effort trudges along after the Category 4 storm destroyed what Irma spared, flattening buildings and tangling power lines. More than 100,000 people live in the U.S. territory, and many of them are now waiting for power, medicine, and fuel.

“It will be a while before this place returns to a semblance of normalcy,” National Guard Chief Joseph Lengyel told Fox News.

Public school buildings are too damaged for students to attend classes, the New York Times reports. The main hospitals will have to be torn down and rebuilt. The power might not be back until December. And authorities have advised residents to boil their water before consumption, fearing contamination.

Making recovery harder is the nearly $2 billion in debt the Virgin Islands is carrying. That’s more per capita than Puerto Rico.

“The economy evaporated pretty much overnight,” one restaurant owner told the Times. Tourism makes up a third of the islands’ gross domestic product. The biggest resorts will stay closed until at least next year, meaning fewer customers for restaurants and bars and fewer jobs.

While attention is focused on the humanitarian crisis affecting millions in Puerto Rico, 40 miles to the west, the Virgin Islands remain mostly out of mind.

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‘Dammit, this is not a good news story,’ San Juan mayor responds to Trump official.

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Hurricane Irma’s power leaves Florida powerless

One of the most powerful hurricanes ever to make U.S. landfall has left millions of people across Florida without power.

As of Monday morning, nearly 60 percent of the entire state — close to 6 million customers — had lost electricity. That’s the largest outage in Florida history and one of the country’s biggest ever.

Restoring power could take weeks, or longer. A spokesperson for Florida Power & Light, the state’s biggest utility, said recovery from the storm would require a “wholesale rebuild” of the electrical grid.

The damage to the state’s electrical infrastructure was just one form of devastation left in Irma’s wake, as the United States faces its second hurricane catastrophe in as many weeks.

An unusually large hurricane, Irma left an exceptional swath of damage on both Florida coasts and nearly everywhere in between. By one metric, this single storm packed an entire season’s worth of destructive power.

Some of Irma’s worst impacts were well-removed from the center: Miami looked like “a watery war zone” at the height of the storm, with residents warily eyeing rising floodwaters in the heart of downtown.

In Jacksonville, at the far northeast corner of Florida, Irma set a new coastal flood record, beating the one set during 1964’s Hurricane Dora.

In Naples, near where Irma made its second landfall in southwest Florida after initially striking the Keys, winds reached as high as 142 mph. The city set an odd mark: The ocean rose nearly 10 feet in eight hours, the quickest rise ever recorded there.

As Irma’s center passed close by, strong winds blew the ocean away from land, exposing the seabed, and then the water quickly rushed back in as winds changed direction and the storm moved north. The effect led to surreal scenes and even prompted a special warning from the National Weather Service to gawkers along the shore.

As is so often the case with these storms, Irma could have been worse: A last-second 50-mile jog inland likely prevented higher storm surge across cities on Florida’s western coast, including Tampa.

Still, the combination of damage from Harvey and Irma will probably total in the hundreds of billions of dollars.

And it’s still peak hurricane season. Hurricane Jose skirted the northeast corner of the Caribbean over the weekend, prompting a full-scale evacuation of the tiny island of Barbuda — which Irma almost totally destroyed just four days earlier.

The latest weather models show that Jose could make a loop in the central Atlantic this week, and then possibly head toward the East Coast. One thing’s for sure: In a year when it’s become clear that “natural” disasters aren’t natural any more, we can’t say we weren’t warned.

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Hurricane Irma’s power leaves Florida powerless

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AP Calculus Interactive Lectures Vol. 1, 2017-18 Edition – Rita Korsunsky

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AP Calculus Interactive Lectures Vol. 1, 2017-18 Edition

Calculus AB PowerPoints 2017

Rita Korsunsky

Genre: Mathematics

Price: $19.99

Publish Date: August 1, 2012

Publisher: EPub Bud

Seller: Rita Korsunsky


This Book reflects the recent changes in the College Board requirements for 2016 – 2017 school year. Imagine having interactive PowerPoint lectures that illustrate every problem, walking you through the procedure step-by-step. Imagine having every proof, illustration, or theorem explained concisely and accurately. This Book contains immersive and comprehensive PowerPoint presentations for every topic covered by AP Calculus AB classes or the AB part of Calculus BC classes. They can be used for both review and learning, a perfect fit for every student no matter their current knowledge of Calculus.  If you are a teacher who wants to learn about licensing options to use these lectures for classroom presentations please visit www.mathboat.com or contact captain@mathboat.com Every example and every lesson targets a specific skill or formula. With this book, you will have every concept you need to know at the tip of your fingers. At the end of this book, you will find the list of all the formulas and theorems needed for the AP test.  This Interactive eBook has all of the tools and teaches you the tips and tricks to master Calculus in no time. Our books are written by Mrs. Rita Korsunsky, a High School Mathematics Teacher with 18 years of experience teaching AP Calculus. Her lectures are rigorous, effective and engaging. Students frequently credit their success on the AP Exam to these thorough, detailed and concise lecture notes.   Her students’ AP Scores speak for themselves:  100% of her students pass the AP Exam 94% of her students get 5 on the AP Exam 

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AP Calculus Interactive Lectures Vol. 1, 2017-18 Edition – Rita Korsunsky

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