Who figured out evolution?

There have been quite a few humans who tried to work out how organisms change with time. Lamarck tried his ideas but was discredited.

Today's Theory of Evolution was discovered with evidence and thought by Charles Darwin and Alfred Russel Wallace. Darwin spent the most energy on gleaning evidence so the theory is these days credited to him. As David Attenborough says, he gave the idea 'irresistable force' when he happened upon a mechanism by which it could occur: Natural Selection.