Helene, Milton losses expected to surpass "truly historic" $50 billion each
Mysterious white blobs washing up on Canadian beaches stump experts
Protecting whales from ship strikes
Book excerpt: "Nexus" by Yuval Noah Harari
Renowned scientist's ashes dropped into eye of Hurricane Milton as tribute
MicroRNA discovery in worms leads to Nobel Prize in medicine
SpaceX launches European asteroid probe as hurricane weather closes in
Maps show which states could see northern lights this weekend
