Earth’s gravitational field is always pulling us toward the center of the Earth.
A recent study showed that shrews' heads could shrink up to 20 percent in the winter.
Learn about gravity, stars, and really big lumps.
People know intellectually that fast food is bad for them, so why do they still crave it?
Male lactation: Fact of fiction? That's the question on today's Moment of Science.
Investigators shine a light on crime scenes mysteries with the help of luminol—a luminescent chemical that reacts with blood.
During migration, birds' digestive system partially shuts down to conserve energy for flight.
Running speed and strength depends on the type of muscular tissue one is born with.
If they exist, aliens give short shrift to humans as a food source.
How will China and the U.S. reach their new goals for emissions reductions?