Sunday, April 19, 2009
Big Blobs Change View of Evolution
Yet as they cruised above the seafloor, the team was distracted by hundreds of bizarre, sediment-coated balls the size of grapes. Each sat at the end of a sinuous track in the seafloor ooze. Indeed, the balls appeared to have made the tracks; some even seemed to have rolled upslope.
The team collected specimens and identified the creatures as giant protozoans, Gromia sphaerica, each one a single large cell with an organic shell, or "test." When cleaned of sediment, the test feels like grape skin, but squishier, Matz says.
More HERE.
that Britain must drastically reduce its population if it is to build a
sustainable society.
the so-called edge of space — the boundary between Earth's atmosphere and outer space.
the most common cause of blindness.
Wednesday, April 15, 2009
BBC E-mail: Chimpanzees exchange meat for sex
** Chimpanzees exchange meat for sex **
Chimpanzees enter into long-term deals, exchanging meat for sex, say researchers who studied behaviour in Ivory Coast.
http://news.bbc.co.uk/go/em/fr/-/1/hi/sci/tech/7988169.stm
Wednesday, April 1, 2009
“In nearly 500 million years of vertebrate evolution, and many thousands of vertebrate species living and dead, this is the only one known to have solved the fundamental optical problem faced by all eyes — how to make an image — using a mirror," said Julian Partridge from the University of Bristol.
While the spookfish looks like it has four eyes, in fact it only has two, each of which is split into two connected parts. One half points upwards, giving the spookfish a view of the ocean — and potential food — above. The other half, which looks like a bump on the side of the fish's head, points down. These diverticular eyes, as they are called, are unique among all vertebrates in that they use a mirror to make the image, Partridge and colleagues found.
More HERE.