Our nation has abundant clean energy resources, and tapping them will generate jobs, make the air safer to breathe, and tackle climate change - the greatest environmental crisis of our time.

Tar sands oil is the dirtiest fuel on Earth. Because producing it consumes so much energy, a gallon of tar sands crude generates 17 percent more carbon pollution than conventional crude oil.

The U.S. has a proud history of cleaning up our air through technological innovation. We did it with leaded gas, acid rain and countless other pollutants, and we can do it with carbon pollution, too.

The Pacific Remote Islands Marine National Monument may be distant from our shores, but it will help us understand how healthy marine ecosystems work and how we can revive troubled seas closer to home.

When we go to the store, we bring home more than food - we bring home traces of broader environmental problems. But we can use our shopping carts and dinner plates to help solve some of those problems.

From reinforcing beaches in the Rockaways to installing generators at the Coney Island Houses and sealing holes in the subway system, New York is fortifying our ability to withstand future storm surges.

Once a landscape is industrialized, its wild character is lost for good. You can't recreate untouched tundra, mountain meadows, crystal clear streams, and animals that have never encountered toxic waste.

Striking a balance between wildlife conservation and wind energy development starts with understanding threats to eagle populations and how our actions, including operating wind farms, are affecting them.

NRDC has helped bring hope spots to more of our shared ocean waters. We helped draft and pass a California law creating a network of underwater parks stretching from the Oregon border to the Mexican border.

The Keystone XL pipeline is a threat to our nation. It would increase pollution and intensify climate change for generations to come. We must raise our voices and demand our leaders reject this dirty scheme.

Getting toxic lead out of gasoline, the oil industry shouted, would cost a dollar a gallon. It turned out to cost just a penny a gallon to protect hundreds of thousands of kids from lead-induced brain damage.

Under pressure from a growing movement of people who want their money out of fossil fuels, universities, pension investors and foundations are looking to exclude coal, oil and gas stocks from their portfolios.

Declaring the San Gabriel Mountains a national monument will make this natural wonder more accessible. It will welcome people from all walks of life and maintain the mountains' wild character at the same time.

Americans are already paying the price for record heat waves, dirty air, and an unstable climate. We need to fight these threats with every weapon we have, and the electricity industry has to do its fair share.

Over the years, I have seen the power of the oceans to excite, feed, and sustain people. I have also seen them undergo a growing onslaught of attacks, from destructive fishing practices to rising acidification.

The science tells us that if we fail to reduce global warming pollution, global temperatures will rise to dangerous levels and unleash devastating extreme weather events and accelerate destructive sea level rise.

The oceans have been a part of my life for as long as I remember. As a child, I spent hours playing in the surf off Cape Cod. In college, I fished along the rocky coast of Nova Scotia with my school's fishing team.

Young people are already leading on climate action. I see it at rallies to reject the Keystone XL dirty tar sands pipeline. I see it in the push to demand justice for communities being run over by fracking operations.

I attended the climate talks in Copenhagen in 2009, and back then, national governments waited until days before to submit climate plans, and the U.S. based its pledge on a proposed bill that would fail in the Senate.

Instead of going to the ends of the Earth - and plumbing the depths of the oceans - to squeeze out every last drop of oil, we need, instead, to do everything we can to reduce the risks of offshore oil and gas production.

We'll always need energy. We need to communicate, too, but we're not stuck with hand gestures and smoke signals. There are better ways to power our future than by digging fossil fuel from the ground and setting it on fire.

California's drought affects everyone in the state, from farmers to fishermen, business owners to suburban residents, and everyone has a role to play in using precious water resources as wisely and efficiently as possible.

Every year, tens of millions of salmon return to the pristine shores of Bristol Bay in Alaska. They linger in the bay's cool, shallow waters before charging up nearby streams to spawn and create another generation of wild salmon.

After being nearly eradicated from the lower 48 states by the 1960s, bald eagles were re-introduced to the Adirondacks in the 1980s, and I'm proud to report the view from my home indicates they are flourishing in upstate New York.

When I left school, I never wondered whether my apartment in New York was vulnerable to storm surges, but my three daughters have to consider the realities of extreme weather and how it may destabilize communities around the globe.

Ordinary people have an extremely important role to play in fighting climate change. Not only can you make your home more energy efficient, drive less, and eat more local food - you can also tell your leaders to take climate action.

Wind and solar power, energy efficient buildings, cars that go farther on a tank of gas, and other solutions can fight climate change. I know America can get on a more sustainable path - we just have to raise our voices and demand it.

We look back at the 1990 Clean Air Act amendments, where people screamed and hollered it's going to be too expensive, they couldn't afford it, and it wouldn't work. And it worked. It worked faster than people expected, at much less cost.

I have visited people whose health has been endangered by tar sands oil. I have watched neighbors struggle to recover from Superstorm Sandy. I have seen solar panels and wind turbines become an increasingly familiar part of the landscape.

All Americans have benefited from the dedicated service of Representative Henry Waxman. In every battle and in every moment that mattered most, Rep. Waxman stood up for the air we breathe, the water we drink, and the wild places we cherish.

A stock market index helps investors track the performance of a group of stocks. NRDC worked with FTSE to develop comprehensive and transparent methodologies that screen out companies linked to owning, exploring, or extracting fossil fuels.

We can choose food that doesn't lead to illnesses like diabetes and cancer. We can choose food that doesn't contribute to water pollution and climate change. And we can choose food that keeps local economies vibrant and farmers on their land.

VW has held a beloved place in American culture. When I graduated from college, many of my friends drove across the country, and most hit the road in a VW van or Bug. Through the years, these cars have represented youth, freedom and quirkiness.

Safer chemicals and more energy-efficient technologies can provide cooling without severe climate implications. Shifting to these alternatives could avoid the equivalent of 12 times the current annual carbon pollution of the United States by 2050.

Though every nation must do its part to address climate change, developed nations are responsible for the lion's share of carbon pollution in the atmosphere, and they have an obligation to help developing nations transition to a sustainable future.

We must not sacrifice one of our remaining untamed places in reckless pursuit of oil. We know we have to leave oil in the ground, or destructive climate change will become unstoppable. If not in the pristine and vulnerable Arctic Ocean, then where?

Americans are worried about pollution - oil trains running through their towns, fracking in their neighborhoods, coal dust in their air. They're worried about what the future will look like for their children if carbon pollution continues unchecked.

The San Gabriel Valley, stretching from Pasadena to Pomona, is especially starved for open space. The valley has a rich array of ethnically diverse communities, but it also has some of the highest rates of childhood obesity and diabetes in the state.

Instead of hazarding our future on the dirty fuels of the past, let's invest in clean power that can drive this country forward. Let's cut energy waste, make our economy the world's most efficient, and give our workers a leg up in the global marketplace.

Nearly every president in the past 100 years has declared national monuments, from Teddy Roosevelt creating the Grand Canyon National Monument to George W. Bush preserving 10 islands and 140,000 square miles of ocean waters in the Northwestern Hawaiian Islands.

In grownups, mercury can cause memory loss, tremors, vision loss and numbness of the fingers and toes. It can also adversely affect fertility and blood pressure regulation, and a growing body of evidence suggests that exposure to mercury may lead to heart disease.

Shell has poured billions of dollars into offshore Arctic drilling, but no matter how much it spends, it cannot make the effort anything but a terrifying gamble. And if Shell, the most profitable company on Earth, can't buy its way to safety in Alaska, nobody can.

Pollution from human activities is changing the Earth's climate. We see the damage that a disrupted climate can do: on our coasts, our farms, forests, mountains, and cities. Those impacts will grow more severe unless we start reducing global warming pollution now.

The phrase 'mad as a hatter' was coined because hat makers were poisoned by the high levels of mercury used in felt processing; these workers developed a strange, uneven gait as well as strange alterations in their personalities - traits that resembled mental instability.

Carbon pollution contributes to climate change, which causes temperatures to rise. Hotter temperatures mean more smog in the air, and breathing smog can inflame deep lung tissue. Repeated inflammation over time can permanently scar lung tissue, even in low concentrations.

I have been fighting climate change for two decades, and people often ask me how I remain hopeful in the face of extreme weather and grim forecasts. The answer is simple: I see countless solutions spreading across the nation and across the world. But we need more investment.

The U.S. can become carbon neutral in our lifetimes. In the process, we will put millions of Americans to work, make our companies more competitive, and shield our communities from extreme weather. And we will honor our obligation to leave the world a better place for future generations.

When the government undertakes or approves a major project such as a dam or highway project, it must make sure the project's impacts, environmental and otherwise, are considered. In many cases, NEPA gives the public its only opportunity to be heard about the project's impact on their community.

Mercury is most commonly recognized as a developmental toxin, threatening to young children and fetuses as they develop their nervous system. Prenatal exposure to even low levels of mercury can cause life-long problems with language skills, fine motor function, and the ability to pay attention.

The signs of climate change are visible across the nation, from the drought-stricken fields of Central California to the flooded streets of Michigan. Extreme weather is turning people's lives upside down and costing communities millions of dollars in damaged infrastructure and added health care costs.

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