Charles Darwin

Science

Charles Darwin's 'tree of life' gets a new look

The Tree of Life proposed by Charles Darwin in the 19th century depicts different forms of life diverging from one another as they evolve down through successive generations. But discoveries of new life forms and the phenomenon of horizontal gene transfer indicate life can also evolve through convergence.

Arts, Culture & Media

New Species in the Old World

In Europe, home to history's greatest taxonomists, professional scientists and amateurs are scouring the countryside for new species — and finding them at an astonishing rate. Ari Daniel Shapiro of our partner program NOVA reports.

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