January
Up one level- Six North American sites hold 12,900-year-old nanodiamond-rich soil
- Discoveries consistent with theory of Clovis-age disruption by cosmic event, say nine-member team led by the UO's Doug Kennett
- Graphics
- Charcoal evidence tracks climate changes in Younger Dryas
- Idea of widespread fires sparked by theorized Clovis-age comet strike is not supported, researchers say
- Chart of NA wildfires after Last Ice Age