Darwin, like many intellectuals of his era, was well versed in a variety of natural sciences, as well as in medicine and theology. When he set forth on his first voyage aboard the HMS Beagle, he ...

Henan Institute of Science and Technology, Xinxiang, China. Darwin proposed that ‘variation’ included changes in the developmental process that could be induced by environmental shifts.

This story appears in the February 2009 issue of National Geographic magazine. The journey of young Charles Darwin aboard His Majesty's Ship Beagle, during the years 1831-36, is one of the best ...