Tryptophan, the essential amino acid behind the Thanksgiving myth that eating turkey can make you sleepy, has been found to ...

Researchers say the latest discovery is particularly significant because tryptophan has never before been detected in ...

When scientists sifted through dust from asteroid Bennu and spotted tryptophan, the same amino acid often blamed for ...

I t’s time to say hello to an old friend again. The first near-Earth asteroid ever discovered by humans, 433 Eros, will have a close fly-by of Earth this weekend, and it should stay visible for a few ...