New fossil evidence from China suggests that some of our vertebrate ancestors had four eyes. The study, published in Nature, ...

The pineal gland is a small gland in the center of the brain. It secretes melatonin, which plays a role in the circadian rhythms or body clock. It may also affect bone metabolism, mental health, and ...

The pineal gland produces several hormones. One of these, melatonin, helps regulate the body’s internal clock, including the sleep-wake cycle. The pineal gland may also help regulate female hormone ...

The pineal gland releases several important hormones, but there’s no conclusive evidence that it releases DMT. The pineal gland releases hormones such as melatonin, which helps regulate the body clock ...