Researchers in China have uncovered the oldest example of a fossilized flower bud ever.
NASA's Curiosity rover has found some interesting organic compounds that may be signs of ancient Mars life, but much more work is needed to vet that hypothesis.
The Doomsday Clock debuted 75 years ago to highlight the threat of nuclear weapons to our survival as a species, a risk now accompanied by escalating climate change and global pandemics.
Blood sugar, or glucose, is an important source of energy and provides nutrients to your body's organs, muscles and nervous system.