And why you should probably leave most baby squirrels alone.
Extremely hot, dry weather in the US is no longer as rare as it used to be.
Lots of new gadgets abound.
Hot and humid weather prevents your body from cooling itself down.
Our editors scrounged up some truly bizarre facts.
Break out your botanical dictionary. You're going to need it.
It's not politics. It's the internet.
Elephants are bringing a genetic gun to a cancer knife-fight.
Researchers developed a sensor to detect blood in the stomach.
Go west, young sapling.
2018 has been a pretty normal year for the measles, actually.
The change between 2011 and 2018 is stark.