Hidden element traced in remains of Renaissance astronomer Tycho Brahe’s secret alchemy lab

Life and death in the heat. What it feels like when Earth's temperatures soar to record highs

Two shark species documented in Puget Sound for first time

Outsourcing conservation in Africa: NGO management reduces poaching and boosts tourism, but raises risks for civilians

New process uses light and enzymes to create greener chemicals

Thousands evacuate season's biggest wildfire in northern California

Spacecraft to swing by Earth, moon on path to Jupiter

NASA Mars rover captures rock that could hold fossilized microbes

Fossil algae show a lake once existed on Lesotho's Mafadi summit, but it vanished about 150 years ago

Will we ever reach Alpha Centauri, our closest neighboring star system?

Otherworldly video captures rare jellyfish with a hitchhiker in its bell

What's the most dangerous sport in the world?

Scientists delve into the give-and-take of chimp conversations

Here's who is most at risk from wildfire smoke and how to protect yourself

French water controls criticized in EU audit; consumers deceived

Journalists Drill Down on Ongoing Covid Risks, Escalating Health Care Costs