



Two new fossils, described this week in the journal Nature, cast fresh light on a little understood and important period of human prehistory at the dawn of our own genus, Homo. The new fossils were discovered by the Koobi Fora Research Project, an international group of scientists directed by mother-daughter team Meave and Louise Leakey, and affiliated with the National Museums of Kenya (NMK). Human evolution over the last two million years is often portrayed as a linear succession of three species: Homo habilis to Homo erectus to ourselves, Homo sapiens. Of these, Homo erectus is commonly seen as the first human ancestor which is like us in many respects, but with a smaller brain…
A new imaging technique developed at MIT has allowed scientists to create the first 3D images of a living cell, using a method similar to the X-ray CT scans doctors use to see inside the body. The technique, described in a paper published in the current online edition of Nature Methods, could be used to produce the most detailed images yet of what goes on inside a living cell without the help of fluorescent markers or other externally added contrast agents, said Michael Feld, director of MIT's George R. Harrison Spectroscopy Laboratory and a professor of physics…
Three stunning new frogs found in Colombia
Prehistoric winged beasts 'pole-vaulted' into flight