Blood tests confirm a second person in Missouri caught bird flu without exposure to infected animals, but questions remain
4 large asteroids, including 1 the size of a skyscraper, speed past Earth
Fighting space junk: More than 100 partners sign Europe's 'Zero Debris Charter'
In a cosmic horror show, this zombie star survived a supernova explosion
Scientists identify firefly species that flickered during the time of dinosaurs
Lunar Google Doodle and card game honor October's last quarter moon
World on pace for significantly more warming without immediate climate action, report warns
Tiny airborne particles within air pollution could be a silent killer – new study uncovers hidden risks and reveals who’s most at risk in New York state
