What are those random piles of rocks on the trail?
From ancient Greece to the age of quantum computers, cryptography continues to keep our secrets safe.
Tigers are the biggest cats in the world, but their populations are struggling. With only 3,200 left in the wild, there are now more living in captivity than in the wild.
While AIDS remains incurable, patients are living much longer — even decades after infection — because of the development of medications to suppress the virus.
Penicillin is was once hailed as a "miracle drug." However, some bacteria have become resistant to penicillin, making those infections difficult or even impossible to treat.
Measles is making a comeback. Here's what you should know about one of the most contagious infectious diseases in the world.
Potential energy is a core concept of any physics-based discussion, and one of the most influential variables in the formulas that describe our known universe.
Google Earth allows us to track our changing world. By providing powerful geomapping and tagging tools to everyone, anyone can explore and model the Earth like never before.
Sleep paralysis can be a confusing, frightening and occasionally pleasant experience — and it's more common than you might think!
Do your fingers turn white and blue when you are cold or stressed out? It might indicate Raynaud's disease.
The sympathetic nervous system activates the "fight-or-flight" response, quickly readying the body to handle dangerous or stressful situations.
Since days of yore, the royal line of succession to the British throne — like most monarchies — was based on primogeniture.
Fried rice syndrome is a type of food poisoning named for the food its most commonly associated with.
These synthetic chemicals have been included in numerous household products for more than eight decades, but are they safe?