Yale scientists have found missing molecular “fossils” that shed light on a key event in the early evolution of life on earth — the origin of the cell nucleus — they report online Sept. 10 in the journal Molecular Biology and Evolution.
The nucleus...
The way we see the world around us is the result of a marriage of two neural pathways — one shared by all vertebrates and one that evolved in mammals more recently. It has been a mystery to scientists how these two networks emerge in development to help...
Aristotle was puzzled. Freud had his own ideas. But no one theory has satisfactorily answered the question: Why do women have orgasms?
Orgasms in human females are not necessary for reproduction. The clitoris, which stimulates orgasm, is situated north of...