Archive for the ‘Dinosaurs’ Category

History of space here on earth

1,000 or 66,000,000 years ago, it’s amazing how we are able to reconstruct what has happened in space with clues here on earth.  According to one article, “Space Explosion to Blame for Tree Ring Mystery, Astronomers Say“by Clara Moskowitz at, we see evidence in tree rings about an  gamma-ray burst that happened somewhere between 3,000 and 12,000 light-years away from earth.

“While just recently we’ve found more clues to support one of the possible ideas as to how dinosaurs became extinct over 66,000,000years ago in the article “Asteroid Impact That Killed the Dinosaurs: New Evidence” by Charles Choi at LiveScience.



Green Librarian


History of the Sea

Who would have thought that hundreds of millions of years ago the sea swept over Missouri. This is according to Diane Toroian Keaggy’s article over at the St. Louis Post-Dispatch entitled “Artist Brings New Arches to St. Louis with Museum Installation. The piece is called “Stone Sea” by British sculptor Andy Goldsworthy.

And what post about geology (and the material used to build the sculptor) would be complete without an article about the K-T Boundry. I discussed the topic with my son’s Science teacher a couple of weeks ago at his student conference.

For those of you who don’t know (and I have to say that I wasn’t too familiar with it either) the boundary marks the end of the Mesozoic era and the beginning of the Cenozoic era, and is associated with the Cretaceiys-Paleogene extinction or mass extinction. You can get more information on the K-T Boundry over at wikipedia.

Sleep tight!


Green Librarian

Fly, fly, fly away

Seeing this article reminded me of a wonderful book I read recently entitled “Feathers: The Evolution of a Natural Miracle” by Thor Hanson. The article is “Feathers Worth a 2nd Look Found on Tiny Dinosaur” by John Noble Wilford at the New York Times.



Green Librarian