Scientists have found fossils on many different continents of species that would have lived in a climate very different from the one in that location today. For example, fossils of aquatic organisms have been found in deserts.
The fossil record also supports the continental drift theory because there have been fossils of the same species found in different continents. For example, there have been fossils found along the eastern coast of South America that are also found along the western coast of Africa. It seems plausible because of this that Africa and South America were connected at one point.
The Indo-European tribe called the Aryans invaded and conquered the Indus Valley Civilization, but many scholars believe that the collapse of the Indus Valley Civilization was caused by climate change.