Purdue University researchers have identified an important enzyme pathway that helps prevent new cells from receiving too many or too few chromosomes, a condition that has been directly linked to cancer and other diseases.
Quaternary Dating Methods
Quaternary Dating Methods - http://www.free-dating-sites-in-usa.com/product/quaternary-dating-methods/
An excellent Dinosaur Timeline Infographic
Largest known land mammal (about 16 ft tall at the shoulders), like a really really really big rhino.
the anatomy of Spinosaurus, the largest predatory dinosaur that existed. By Lawson Parker, October