How long a drug remains effective after its expiration date is often a matter of debate.
Life's Little Mysteries answers fascinating questions about the world around you and the stuff in it, including wild questions you didn't even know you had.
And check out our "Life's Little Mysteries" podcast, where we answer questions about mysteries big and small — about ancient civilizations; our planet and solar system; the plants and animals that live alongside us; our bodies and how they work; and more. Listen in on Apple podcasts, Spotify and Audioboom.
As many pet owners will attest, when their cat prepares to pounce, it does a little butt wiggle first.
Sleep learning, the way people commonly think of it, is almost certainly impossible. But researchers are discovering types of learning that occur during sleep, with exciting applications.
Australia is the kingdom of marsupials, home to furry kangaroos, koalas and wombats. The continent has so many marsupials, it raises the question: Did these pouch-bearing mammals arise Down Under?
Earth's atmosphere is enormous, so far reaching that it even affects the International Space Station's route. But how did this giant gaseous envelope form?
The pressure caused by flying at altitude is particularly difficult to bear for babies and toddlers.
Dinosaurs ruled the Earth for hundreds of millions of years before they died in an asteroid blast 66 million years ago. So, could these gigantic reptiles ever re-evolve back to our modern world?