Two additional human bird flu cases confirmed in California
Atmospheric rivers are shifting poleward, reshaping global weather patterns
Comet Tsuchinshan-ATLAS is a Halloween visitor from the spooky Oort Cloud − the invisible bubble that’s home to countless space objects
New Hubble images show Jupiter’s Great Red Spot wiggles like gelatin
What's behind the northern lights that dazzled the sky farther south than normal
Human foot found on Everest may hold key to one of mountaineering’s greatest mysteries
A young Latina spearheading clean air policies sees her work as 'personal'
‘It went horribly wrong’: DNA analysis sheds light on lost Arctic expedition’s grisly end
