Study detects Naegleria fowleri, a rare amoeba that causes a usually fatal brain infection, in thermally influenced waters across western US national parks

Inside the Interstitium, the Human Body’s Hidden Pathways

The brain may use dopamine to bend time and shape memory

Methylene blue protects hair follicle stem cells from oxidative and metabolic stress to enhance hair regeneration

Many scorpion species carry zinc and other heavy metals in their pincers and stingers

Toxins plus climate harms likely cause of reduced fertility, study finds

Human heads have changed shape a lot in the past 100 years

FDA to weigh easing limits on unproven peptides favored by RFK Jr. | AP News

City birds appear to be more afraid of women than men, and scientists have no idea why

How melatonin promotes sleep: « Melatonin is a naturally produced molecule that has long been suspected to play a role in healthy sleep, but it has been unclear how it does so