Women are extraordinary in lacking the estrus, or period of heat. The females of most other primate species become sexually active, to the point of aggression, only at the time of ovulation. Why has sexual responsiveness become nearly continuous? Unusually frequent sexual activity between males and females served as the principle device for cementing the pair bond.

In science, obsessiveness under psychological control can be a virtue.

Once I feel I'm right, I have enjoyed provoking.

Biophilia: the innate pleasure from living abundance and diversity as manifested by the human impulse to imitate Nature with gardens.

You teach me, I forget. You show me, I remember. You involve me, I understand.

Mating Strategy is influenced by the cardinal fact that women have more at stake in sexual activity than men, because of the limited age span in which they can reproduce and the heavy investment required of them with each child conceived. In courtship women consistently emphasize commitment of resources and material security.

Ants make up two-thirds of the biomass of all the insects. There are millions of species of organisms and we know almost nothing about them.