Oldest Rocks Found

No, this is this is not a John McCain joke:

Earth's most ancient rocks, with an age of 4.28 billion years, have been found on the shore of Hudson Bay, Canada.
Writing in Science journal, a team reports finding that a sample of Nuvvuagittuq greenstone is 250 million years older than any rocks known.
It may even hold evidence of activity by ancient life forms. [...]

"The rocks contain a very special chemical signature - one that can only be found in rocks which are very, very old," he said.

Photos of the area.

Yellowstone is Crowning

Got vacation plans? Hope they're not here. [Or I hope they are. Could be a great, low turnout year.] In fact, maybe you should switch them to somewhere in the Southern Hemisphere.

If you're not familiar with the ginormous once upon a volcano that is a large section of Yellwstone Park and why this "swelling" business is significant, here. Happy reading.