Wednesday, March 25, 2009

Tuesday, March 24, 2009

Prehistoric fish pioneered sex

From Rueters

By Ben Hirschler

LONDON (Reuters) - Sex has been a fact of life for at least 380 million years, longer than previously thought. Internal fertilization was widespread among prehistoric fish living on ancient tropical coral reefs in the Devonian period, research published in the journal Nature on Wednesday showed.

The discovery sheds new light on the reproductive history of all jawed vertebrates, including humans.

"It shifts how we think about how reproduction evolved. You're a jawed vertebrate and I'm a jawed vertebrate, so this is our own history," said Zerina Johanson, a paleontologist at the Natural History Museum in London.

read the rest here

Saturday, March 7, 2009

Lake Superior Ice Pack - March 3

This picture, provided by those socialists at the NOAA (you know, as Bobby Jindal says, "pictures from space ? who needs that ?") shows a pretty dramatic ice pack on the Great Lake this winter. Hope it bodes well for water levels in the U.P. this summer.

There is an almost ice bridge all the way out to Isle Royale. I don't think that happens very often.