Environment

Earth’s atmosphere: Why do levels of carbon dioxide vary over millennia?

Biologists identify genes that cause melanoma in swordtail fish hybrids

Extreme heat, severe pollution pose dual threat to South Asia, study says

Texas A&M joins research-driven effort to stem climate change

Areas hit by Hurricane Harvey report surprising scores for mental health

Ultrafine particles in auto emissions enter lungs, harm other organs

Core samples help geoscientists reveal history of ocean circulation

What killed the colorful coral reefs in this Gulf of Mexico sanctuary?