A new look at the louse family tree has revealed that many lice hosted by mammals, including the human head louse, have coevolved with mammals over tens of millions of years. Continue reading Itching for a change? Some lice have evolved alongside their hosts for millions of years.
Humans are one of mammal’s top drinking champions; we even have better tolerance than elephants Continue reading Who would win a drinking competition, humans or elephants?
Researchers at Max Planck Institute for Brain Research have discovered a mammalian claustrum in reptiles, believed to impact decision-making and consciousness. The study hints at the claustrum’s prehistoric existence, in mammals, reptiles, and possibly their common ancestor. Continue reading Study finds a classically mammalian brain region in reptilian brains
Take a big inhale and a deep dive. Imagine staying underwater as long as possible. Now imagine a shark approaching, with gleaming teeth, and swimming away as fast as you can. Imagine trying to do both at the same time. You are not alone if you find this confusing. Freeze and flight responses are often mutually exclusive. If you try to do both at once, … Continue reading To Flee or Not to Flee: Narwhals puzzle scientists with their escape heartbeat