Scientists hoard their discoveries, rarely sharing with others. There is backbiting, rumor mongering and generally impolite behavior.
Many scientists libel each other to gain points with their financiers and followers, knowing full well that doing so works in opposition with the betterment of the very cause of science.
I've lost my train of thought... was I writing about scientists or politicians?
Regardless, kudos to Lee R. Berger for his discovery of Australopithecus sediba and for sharing his findings in the name of science.