National Park Service researchers have identified a previously unknown shark species in the limestone walls of Mammoth Cave, ...

Prepare to get schooled If you have kids in school, or even if you don’t, you’ve probably realized that there’s a lot about the day-to-day of school that’s changed in recent years. Everything from the ...

The post Two Ancient Marine Creatures Found Deep In The World’s Largest Cave first on TwistedSifter. There are so many mysterious that remain here on this planet of ours, and many of them exist in ...