Uncategorized
- Earth
Last Gasp: Toxic gas could explain great extinction
Sudden venting of hydrogen sulfide from the deep sea could have caused the largest extinction in Earth's history by poisoning land animals and destroying atmospheric ozone that protects Earth from ultraviolet light.
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19554
This article features yet another study making summary statements on what is obviously inadequate sampling. Most of the language families from California to Alaska have not been represented in any DNA studies. Those of us who study cultures on the northwest coast of America see the enormous complexities of cultures in this area. Outdated and […]
- Anthropology
Founding Families: New World was settled by small tribe
A new genetic analysis indicates that only about 200 to 300 people crossed the ice age land bridge from Asia to become the founding population of North America.
