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Harel posits biophilia as the root of Darwin's genius and the influence behind everything from his love of dogs and fascination with the insect-eating Drosera plant to his rejection of mind-body dualism and his sense that estimations of the earth's age would one day align with the time span of evolution.

He said he cared more about the genus Drosera, which means dewy in Latin, than the origin of all the species in the world.

The researchers investigated how two sundew species, Drosera makinoi and Drosera toyoakensis, attract prey.

As they report in Plant Species Biology, the petals of Drosera tokaiensis and Drosera spatulate fold up within two to 10 minutes after parts of their stem, calyx, or closed flowers are pressed with tweezers.

In his work on the carnivorous sundew plant Drosera rotundifolia, for instance, he generated several predictions to test his hypothesis that it trapped insects to obtain nitrogen.