A new study finds that climate change is already causing all sorts of problems on Earth, but soon it will be making a mess in orbit around the planet too.

Researchers, doctors, their patients and supporters are venturing out of labs, hospitals and offices across the country to stand up to what they call an attack on life-saving science by the Trump administration.

A new study finds the number of butterflies has dropped 22% since 2000, a new study finds.

A new and massive study finds that climate change is melting the world’s mountain glaciers faster than ever.

Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point on America’s winter of repeated polar vortex invasions starting this weekend.

Nearly 200 nations faced a Monday deadline to file what the United Nations’ climate chief calls “among the most important policy documents governments will produce this century."

The European climate service Copernicus says the world warmed to yet another monthly heat record in January, despite an abnormally chilly United States, a cooling La Nina and predictions of a slightly less hot year.

Federal disaster aid is nearly everywhere.

A new study finds that rat infestation in many of the world’s cities appears to be soaring, especially in Washington.

A quick scientific study finds that human-caused climate change increased the likelihood and intensity of the hot, dry and windy conditions that fanned the flames of the recent devastating Southern California wildfires.

A new study finds that extreme temperatures — mostly heat — are projected to kill as many as 2.3 million people in Europe by the end of the century unless countries get better at reducing carbon pollution and adapting to hotter conditions.

The world’s biggest iceberg — a wall of ice the size of Rhode Island — is lumbering toward a remote island off Antarctica that’s home to millions of penguins and seals.

The Paris agreement is complex and works in a slow bureaucratic manner.

The vast majority of Americans are about to get an extended taste of frigid Siberian weather.

Global temperatures in 2024 soared to yet another record level, but this time it was such a big jump that Earth temporarily passed a major symbolic climate threshold.

Greenland plays an outsized role in the daily weather experienced by billions of people and in the climate changes taking shape all over the planet.

Frigid air that normally stays trapped in the Arctic has escaped, plunging deep into the United States for an extended visit that is expected to provoke teeth-chattering but not be record-shattering.

Meteorologists forecast a strong snow and ice storm followed by brutally cold conditions will soon smack the eastern two-thirds of the United States.

A surprising study of temperature-related deaths in Mexico upends conventional thinking about what age group is hit hardest by heat.