Celebrating Darwin

A Surprise Challenger
Another British naturalist and explorer, Alfred Russel Wallace, devised his own theory of species diversity based on his travels in the Amazon and Malay archipelago. In 1858, he sent an essay on his work to Darwin, who realized their theories were essentially identical. Darwin then rushed to set his down on paper and it was published first.

• A New Evolution Fight at the SIte of the Scopes Monkey Trial