It was not until the 1960s that evidence of convection currents within the mantle was discovered to support the theory fully. This slideshow explains Wegener’s theory. What was the evidence for ...

and thus "continental drift," originally proposed by Alfred Wegener back in 1912. It convinced many that plate tectonics was the best theory to unify nearly all the previously accumulated ...

It's difficult to imagine a process more gradual than continental drift. But some scientists ... According to some scientists, fossil evidence clearly shows a decline in the number of dinosaur ...