A new analysis of air quality data from the past 70 years shows that Canada’s record wildfire smoke in 2023 is part of a broader, continent-wide trend toward smokier skies across North America.

Forensics experts gather DNA to understand who was present at a crime scene. 

Microbes across Earth’s coldest regions are becoming more active as glaciers, permafrost and sea ice thaw, accelerating carbon release and potentially amplifying climate change, according to a new international review from McGill University.

Even as global warming causes sea levels to rise worldwide, sea levels around Greenland will likely drop, according to a new paper in Nature Communications.

PFAS, or per- or polyfluoroalkyl substances, are ubiquitous in modern life. First produced at the end of World War II, these chemicals are in everything from furniture and cosmetics to food packaging, non-stick pans and clothing.

A new study shows that interactions between wolves and cougars in Yellowstone National Park are driven by wolves stealing prey killed by cougars and that shifts in cougar diets to smaller prey help them avoid wolf encounters.

Green hydrogen produced using solar and wind power would be cheaper to produce at more southerly latitudes than in the Nordic region. 

Astronomers from the International Centre of Radio Astronomy Research (ICRAR) have created the largest low-frequency radio colour image of the Milky Way ever assembled.

New research published in Nature Ecology and Evolution reveals significant recent shifts in tree diversity among the tropical forests of the Andes and Amazon, driven by global change.

While this eerie NASA Hubble Space Telescope image may look ghostly, it’s actually full of new life.