Stories by Chelsea Harvey

The first two years of Russia’s war in Ukraine have produced 175 million tons of carbon dioxide

World leaders must make plans to remove more carbon dioxide from the atmosphere, a new report says

This week U.N. Secretary-General António Guterres called for bans on fossil fuel ads, but legal challenges would make nationwide restrictions difficult to implement in the U.S.

Scientists say it’s likely that at least one of the next five years will exceed an average increase of 1.5 degrees Celsius above preindustrial temperatures

Nations aren't required to report their military climate pollution under the Paris Agreement. Experts say that should change

Floods, wildfires, droughts and earthquakes forced more than 26 million people to leave their homes in 2023

An active hurricane season could be in store because of ocean temperatures in the North Atlantic that broke records for more than a year

Using forests to prop up carbon markets can lead to “perverse effects” on land management, such as cutting out local communities

A new U.N. program highlights the disconnect between climate messaging and the growing possibility of overshooting a key global warming threshold

Scientists say extreme temperatures that reached 119 degrees Fahrenheit and killed at least 100 people in parts of West Africa would only occur every 200 years in the absence of climate change

Compound events in which coastal flooding and heat waves occur at the same time are happening more often as the planet warms

As much as 85 percent of U.S. emissions of sulfuryl fluoride—a rare greenhouse gas and common pesticide used to treat termites—comes from California

A beleaguered solar geoengineering project failed to conduct field tests because of opposition from environmentalists and Indigenous residents

About 20 percent of large wildfires in North America now burn overnight because of drought conditions, straining firefighting resources

A marine heat wave last year undercut efforts to regrow coral reefs off Florida’s coast. Conservationists are worried this year could be problematic, too

Observations from MethaneSat could be used to independently verify industry reports and enforce regulations on fossil fuel companies

In the two years since Russia invaded Ukraine, a chasm has grown between Russian scientists who are studying the Arctic and their counterparts around the world

Echo chambers of climate denial on social media are strongest in the U.S. Midwest and South and in states that depend heavily on fossil fuels

The U.S. Department of Energy will award up to $100 million for projects that remove CO2 from the atmosphere

NASA’s PACE mission aims to increase our understanding of Earth’s carbon cycle, pollution particles and ocean plankton

Rising temperatures are melting an area of the Swiss Alps where scientists have been working to collect centuries-old ice cores that contain evidence of past environmental conditions

Some scientists say the controversial fishing practice of ocean trawling stirs up buried organic matter, some of which makes its way to the surface in the form of carbon dioxide

Scientists accidentally discovered a new way of monitoring the Earth’s planetary boundary layer: high-flying great frigatebirds

Fiber-optic cables buried in the seafloor off Alaska are helping scientists study the thawing of underwater permafrost, which could release greenhouse gases