Breathing dirty air can make you sick. But according to new research, it can also make you more aggressive. That's the conclusion from a set of studies recently authored by Colorado State University researchers in economics, atmospheric science and statistics. Together, the team found strong links between short-term exposure to air pollution and aggressive behavior, in the form of aggravated assaults and other violent crimes across the continental United States.

Animals are disappearing at hundreds of times the normal rate, primarily because of shrinking habitats. Their biggest threat: humans.

Cape Town residents don't know who to blame for the disappearance of their great white sharks, which haven't been seen this year in False Bay.

The desert's age has been the topic of debate for decades among scientists.

Human-driven land clearing and climate change are sending plants extinct at a rapid rate, risking a devastating biodiversity crash.

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.

Photographer Edward Burtynsky explains his 40-year quest for striking images of our impact on the planet.

Earth didn't always harbor life. But around 4 billion years ago, something in the environment changed, and systems with biological properties began to emerge. Many scientists believe a lively dance of molecules called amino acids is partly responsible for the shift: Molecules linked up, broke apart and eventually came together to form life as we know it.

The world's appetite for meat hurts the climate. Here's why Australian steak isn't so bad.

The new measures could pose challenges to air quality, climate action, and Native American traditions

Explore the dynamics of our changing planet over the past three and a half decades.Google Earth time lapses, from 1984 to 2018.You can watch deforestation in the Amazon, glaciers disappearing, rapid city expansion.

New research finds micro-plastic particles in everything from Arctic sea ice to snow in the Alps to rain in the Rockies. There is almost no research about the health effects of micro-plastics on humans.

The ozone layer is finally healing from damage humans have caused, according to the United Nations.

Activists say stinking sludge is linked to nitrates in fertilisers from intensive farming

Himalayan villages are growing food in the forests, a traditional model that can fight both land clearing and world hunger.

A fifth of Earth’s geologic history might have vanished because planet-wide glaciers buried the evidence.

Formally known as Achatinella apexfulva, the 14-year-old Hawaiian tree snail was the last of its kind on the planet.

Earth's north magnetic pole is on the move, unpredictably lurching away from the Canadian Arctic and toward Siberia. It's wandered so much, that the current representation of the entire globe's magnetic field, just updated in 2015, is now out of date. And so, geologists have come up with a new model. This updated model, called the World Magnetic Model, was supposed to be published Jan. 15, but it's now been delayed to Jan. 30, on account of the government shutdown.

The magnetic north pole has been drifting away from the Canadian Arctic at a brisk 55 kilometers — about 34 miles — per year, with ramifications for military and civilian travelers.

Exclusive: Insects could vanish within a century at current rate of decline, says global review