Fire and life had coevolved across 420 million years, and ecological checks and balances limited how far humans could push ... waning decades of the Little Ice Age. This havoc inspired the federal ...
Fossilized footprints in Saudi Arabia show human traffic on the cusp of a subsequent ice age. Like carbon dating, scientists use isotopes and context clues to calculate the approximate age of fossils.
The over-representation of females, compared to other mammoth bone assemblages, and the inclusion of juvenile remains led the researchers to believe that Ice Age humans were primarily targeting ...