A pair of killer whales has been terrorizing great white sharks near Capetown, slaughtering at least eight sharks over five years and eating their livers, scientists say.
High-energy eruptions of radiation from the sun's atmosphere can sometimes launch blobs of plasma toward Earth.
Your body's cells are constantly replicating themselves, but the rate of renewal depends on where those cells are located and what they do.
A surprise solar storm hit Earth on June 25 causing unexpected auroras that lit up the sky during a rare 5-planet alignment.
A white dwarf star exploded in a supernova and survived, reappearing even brighter than before. In a new study, scientists hypothesize why.
Like some other metals, copper oxidizes when left out in the elements, but the coloring process is complicated.
NASA is trying to reclaim its "one-of-a-kind' Apollo rarity" — an auction lot containing moondust and cockroaches.
More than 70% of our little blue planet is covered by water, but we can only drink a tiny fraction of it. Why can't we drink saltwater when it is all around us?
If the surface of your skin gets too chilly, the brain sets into motion a series of warming tricks such as shivering.
There are a myriad of answers to the question, "why are manhole covers round?" But most of them have to do with functionality and economy.
Some species of turtles age very slowly or not at all, according to new studies of both captive and wild populations. How do they do it?
Archaeologists have revealed a complex of hidden passageways and galleries deep inside an ancient temple in the Peruvian Andes.