16 English words that are hard for non-natives to say
June 22, 2015, 1:49 p.m. by Mary Jo DiLonardo
'Squirrel' and 'penguin' are just the tip of the iceberg when it comes to our baffling language.
The fastest-growing biome on Earth is in our homes
June 3, 2015, 1:02 p.m. by Mary Jo DiLonardo
Forget your kids and pets. Your house's biodiversity hotspots shelter tons of microorganisms.
'Super mom' spotted on a Minnesota lake — with 56 ducklings in tow
On maiden voyage, Boaty McBoatface identifies significant culprit in rising sea levels
Parallel worlds exist and interact with our world, say physicists
Winning Nat Geo photos reveal nature and humanity at their finest
9 eerily beautiful songs of night birds
9 of the world's largest dog breeds