Can oxygen sometimes be toxic? Find out on today's Moment of Science.
Gut bacteria not only help digest food, they also signal to our brain that we've eaten enough.
Scientists discover the switch that turns on the aging process.
Are you counting calories? Here's how food scientists get their figures.
In the northern hemisphere, it's getting to be grilling season again. Before you get too excited, though, there are a few things you should know.
Saliva doesn't just help with digestion; it also aids your body's fight against disease and infection.
The discovery of a strange virus living in a hot, acidic lake may hold the answer to the evolution of DNA as today's most common genetic molecule.
According to another theory, life on Earth may not have begun with RNA but rather with amino acids able to fold into proteins in a high salt environment.
At the University of Cambridge in the UK, astronomers and cancer researchers have joined forces.
Imagine that you're an insect, and that you've fallen ill because some bacteria or parasites have invaded your body. What do you do?