Climate

Wildfire Smoke: How It Harms the Whole Body

Researchers are beginning to understand the long-term impact of wildfire smoke exposure on human health. And it's not good. "Your whole body is affected," said Yang Liu, Professor of Environmental Health at Emory University in Atlanta. "Wildfire smoke causes oxidative stress to your system and exacerbates or accelerates the development of diseases."

Giant Tortoises Reintroduced to Floreana After Nearly 150 Years

Nearly 150 years after giant tortoises vanished from Floreana Island in Ecuador's Galapagos archipelago, the species has made a long‑anticipated return. Ecuadorian authorities this week released 158 juvenile tortoises, each between 8 and 13 years old. The release is the first phase of a larger plan to reintroduce 700 animals to the island.

Australians changing how they respond to wildfires

It was 1 a.m. and I struggled to sleep as wind blasted through the forest canopy and the smell of smoke hung in the air from distant fires. Pastures and bushland were fueling a widening fire-front about 90 kilometers (56 miles) to the north of our mountain home on the edge of Melbourne.

UN urges redirecting trillions toward nature-based investments

The world spends 30 times more money destroying nature than protecting it. That's according to a new report from the United Nations Environment Program (UNEP) that exposes a massive gulf between so-called "harmful investments" and financing that promotes nature preservation.

Cutting PFAS Pollution Could Protect Health and Save Billions

The United Kingdom announced Tuesday that it would tackle PFAS pollution, introducing an action plan to "understand where these chemicals are coming from, how they spread and how to reduce public and environmental exposure." The plan includes monitoring of rivers, lakes and seas, supporting a transition away from PFAS, and consulting on a limit for drinking water.

Air Conditioning as Heating Cuts Costs and Emissions

It's a sweltering summer afternoon. You step indoors, switch on the air conditioner, and within minutes the air begins to cool. What's happening behind that familiar hum is not the creation of cold, but the movement of heat. In summer, heat is absorbed from indoor air and released outside via a refrigerant loop.

Strained geopolitics threaten decades of Arctic scientific collaboration

Decades of successful scientific collaboration could be at risk if political relations between Europe and the US continue to fray over trade and defense issues. For more than 30 years, Arctic nations have worked together across the physical, biological and social sciences to understand one of the world's fastest-changing regions.

Record Flooding Forces Thousands to Evacuate in Western Washington

Washington state flooding forces thousands to evacuate : The Picture Show Record flooding in Washington state has forced tens of thousands of people to evacuate after torrential rains this week. The Picture Show December 12, 2025 1:38 PM ET Neighbors watch as Gages Slough overflows and floods a street in Burlington, Wash., on Friday.