Scientists recently studied laughter in different animals, such as rats and primates, by tickling them. One study compared the sounds made by humans and great apes:

Nature, one of the premier science journals in the world today, recently published its editors' choice of science stories for 2011.¹

Primate fossils discovered in South Africa in 2008 are being hailed as an evolutionary "game changer." ABC News recently reported that these fossils provide a "key link in the process of evolution that led to modern human beings."¹ But neither is true, and it's not too hard to understand why.

In 2010, a new candidate was announced for humanity's evolutionary tree…Australopithecus sediba.¹ Now, recent analyses of its fossilized bones are being reported as further proof of its ancestral standing.