New research reveals the demise of an ancient forest. These are dawn redwood stumps on Axel Heiberg Island, Nunavut. (Credit: Copyright David Greenwood / Used with permission)From Science Daily:
ScienceDaily (June 25, 2009) — For climatologists, part of the challenge in predicting the future is figuring out exactly what happened during previous periods of global climate change.
One long-standing climate puzzle relates to a sequence of events 33.5 million years ago in the Late Eocene and Early Oligocene. Profound changes were underway. Globally, carbon dioxide levels were falling and the hothouse warmth of the dinosaur age and Eocene Period was waning. In Antarctica, ice sheets had formed and covered much of the southern polar continent.
Read more ....
No comments:
Post a Comment