Probably because they love science and its in their blood.

James E. Thomson has written:

'Uranium and thorium deposits at the base of the Huronian system in the District of Sudbury'

Peter McKellar has written:

'The correlation of the Animikie and Huronian rocks of Lake Superior' -- subject(s): Petrology, Geology

Philip W. Fralick has written:

'Early Proterozoic basin development on a cratonic margin: the lower Huronian supergroup of Central Ontario'

There were no animals during this period. The only life forms were primitive bacteria which lived in sea waters. They survived by being under sea. All others were wiped out.