Carbon dioxide makes up less than one-twentieth of 1% of Earth's atmosphere. How does this relatively scarce gas control Earth's thermostat?
The typical American's annual household carbon footprint is over five times the world per capita average.
Should lakes, rivers and other resources have legal rights? New Zealand, Ecuador and other countries have taken this step. Now Toledo, Ohio is a US test case.
Conservatives worldwide favor carbon pricing, cap-and-trade systems and other innovative environmental plans – just not in the United States.
As deforestation rates in Brazil rise, it's worth asking whether the country can repeat the successes of the last decade. Current trends don't bode well.
Poverty and violence are often cited as the reasons people emigrate from Central America, but factors such as drought, exacerbated by climate change, are driving people to leave too.
Social media make it easier to push information out quickly during disasters, but also create challenges for public information officers, who have to judge which reports are credible enough to share.
Newark is the latest US city to struggle with high lead levels in drinking water. Ending this public health crisis will require more money and enforcement, plus stricter water testing standards.
As Hurricane Dorian approaches Florida, we share three articles on predicting hurricanes' paths and evacuating from harm's way.
Two energy scholars who have studied the extent of methane leaks in the oil and gas industry explain what rescinding methane emissions regulations will mean to the climate and industry.
Don't blame climate change for the 39,000 forest fires now incinerating huge tracts of the Brazilian Amazon. This environmental catastrophe is human-made and highly political.
If the Amazon rainforest functions as our planet's lungs, what do raging wildfires threaten? An atmospheric scientist explains why the fires, though devastating, won't suffocate life on Earth.
InterContinental Hotels Group plans to switch miniature toiletries for bulk products, but it isn't likely to do as much for the environment as activists might think.
Some climate scientists have spoken out about the dangers of climate change. But a new study shows those voices may not be very influential.
More than one-fifth of global warming emissions come from land use. Sustainable farming can make soil healthier and better able to soak up carbon, while saving energy and boosting food production.
A new report calls land key to solving climate change. The good news is that there are strategies for reducing carbon emissions from land use that can also produce economic and social benefits.
The Trump administration is changing implementation of the Endangered Species Act in ways that conservationists say would reduce protection for some of America's most threatened wildlife.
New research forecasts that climate change will make multiyear stretches with low snow levels more common across western North America – bad news for water managers, farmers, foresters and skiers.
A tick expert explains his work trying to understand why the abundance of the parasites vary so much from location to location and year to year.
Many practicing U.S. Christians do not believe that human activities are warming the Earth, but they hold diverse views about the environment. Effective climate conversations recognize those nuances.
Climate change isn't just a technical challenge – it also involves ethics, social justice and cultural values. Insights from literature, philosophy and other humanities can produce better solutions.
Media coverage of sharks often exaggerates risks to people, but more than 500 shark species have never been known to attack humans, and there's lots to learn about them.
July 29, 2019 is 'Earth Overshoot Day,' a date coined by the nonprofit Global Footprint Network to publicize overuse of Earth's resources. But their estimates may actually understate the problem.
Iran's leaders are threatening to breach a 2015 agreement that froze their country's nuclear program. What is uranium enrichment, and what would it mean for Iran's ability to build nuclear weapons?
Hagfish have been called the most disgusting creatures in the ocean. But what are they?
Hot weather kills more Americans yearly on average than floods, tornadoes or hurricanes. Three scholars explain how cities can prepare and help residents stay cool.
Birds spend a lot of time and energy singing, but they don't do it the same way in every season of the year. And some can't sing at all. What's the purpose of birdsong?
At a time when storms are becoming more frequent and severe, relying on levees for flood control can create as many problems as it solves.
Western states adopted a 7-year plan in May 2019 to manage low water levels in the Colorado River. Now they need to look farther ahead and accept that there will be less water far into the future.
Scientists are predicting major algae blooms in Lake Erie and large dead zones in the Chesapeake Bay and Gulf of Mexico this summer. Nutrient pollution from industrial corn farming is a major driver.
Flint's highest recorded lead levels were typical for water systems that report problems. What's more, a number of cities haven't reported their lead issues.
Three scholars argue that agriculture is failing to sustain either the land or American farmers. They propose a modern version of the New Deal that centers on ecology and economic fairness.
Getting everyone whose lives were thrown off-track back takes a lot of personal effort, paired with work done by a constantly shifting mix of nonprofits and governmental agencies over many years.
In a study that cultivated coral 'gardens' with varying numbers of species, plots with more species were healthier. This finding could inform strategies to help coral reefs survive climate change.
Every year the US burns more than 34 million tons of garbage in incinerators. These plants are major pollution sources, and most are clustered in disadvantaged communities.
The 6-3 ruling challenges some common political assumptions about conservatives and liberals.
Many current and former US military leaders call climate change a serious national security threat, but few of them mention the Defense Department's big carbon footprint.
Federal and state agencies are carrying out a 35-year, multi-billion-dollar plan to restore Florida's Everglades, but have not factored sea level rise or other climate change impacts into their plans.
North Atlantic right whales are headed toward a traumatic extinction, but could rebound if humans can get out of their way.
A grade of 92 is an A at most schools, but for tap water it means that millions of Americans drink water that fails to met federal standards.
An engineering professor explains why rural areas are especially vulnerable to hurricanes, and what they can do to ensure that no one is left without help.
For the start of Atlantic hurricane season on June 1, scholars explain weather forecasting, evacuation orders, inland flooding risks and how social ties influence decisions to stay or flee.
By appealing to the hearts and minds of their white neighbors, Native Americans are carving out common ground. Together, these different groups are building unity through diversity.
North Korea is a major military threat to the US and its Asian allies, but exactly how powerful are its nuclear weapons? An earth scientist explains why it's hard to answer this question.
The 'thin green line' of resistance against any new infrastructure for shipping oil, gas and coal abroad has won many battles.