SOURCE: BBC News
New data from Greenland ice cores suggest North America may have suffered a large cosmic impact about 12,900 years ago.A layer of platinum is seen in ice of the same age as a known abrupt climate transition, US scientists report.The climate flip has previously been linked to the demise of the North American "Clovis" people.The data seem to back the idea that an impact tipped the climate into a colder phase, a point of current debate.Rapid climate change occurred 12,900 years ago, and it is proposed that this is associated with the extinction of large mammals - such as the mammoth, widespread wildfires and rapid changes in atmospheric and ocean circulation....
- Evelyn Brooks Higginbotham on the AP Af-Am Studies Controversy
- 600 African American Studies Faculty Sign Open Letter in Defense of AP African American Studies
- Organization of American Historians Statement on AP African American Studies
- Historians on DeSantis and the Fight Over Black History
- How the Right Got Waco Wrong