Cats are, we are told sternly, an unsustainable “environmental vice that we must confront”!
Scientists debate whether ctenophores are the earliest animals to appear in the Cambrian explosion. If so, they arrived with multiple tissues, a nervous system, and a digestive system.
Bioethicist Jacob M. Appel wants the bioethics movement to educate your children about the policy and personal conundrums that involve medical care and health public policy.
It isn’t often you have the opportunity to influence millions. This is one of those special times.
A new fossil worm from the closing days of the Ediacaran is being celebrated as a missing link that demonstrates a gradual Cambrian diversification, not an explosion.