The smartest of invertebrates, the octopus, once again prompts us to rethink what we believe to be the origin of intelligence.
Researchers say a growing number of adults have a persistent, prominent median artery in their arms, an artery that’s important in the embryonic stage.
If I gave you 15 seconds you could come up with a pat evolutionary just-so story to account for this, speculating on what reproductive advantage it serves.
Consider: Children — no matter how “mature” — cannot buy cigarettes or give consent to being tattooed.
Ethical constraints still depend only on scientists’ restraint — a “thin reed to stand on.”