Free Republic 3rd Quarter Fundraising Target: $85,000 Receipts & Pledges to-date: $30,402
35%  
Woo hoo!! And the first 35% is in!! Thank you all very much!!

Keyword: moronscience

Brevity: Headers | « Text »
  • Humans to Blame for Ice Age Extinctions, Study Says

    08/11/2005 11:02:22 AM PDT · by ZULU · 146 replies · 2,485+ views
    National Geographic ^ | August 10, 2005 | Hillery Mayell
    Humans are likely responsible for the extinction of Ice Age megafauna—large mammals like giant sloths, short-faced bears, mammoths, and saber-toothed cats—that occurred in the Americas around 11,000 years ago, a new study says. Scientists have long debated whether giant pre-historic mammals disappeared because of climate change or because humans hunted them to extinction. The mass extinctions coincided with both the end of the last Ice Age and the arrival of humans in the Americas around 11,000 years ago. This timing has made it difficult for scientists to isolate the cause of the species' disappearance. But a study comparing the extinction...