HumansLeprosy was in the Americas long before the arrival of Europeans The history books say Europeans brought leprosy to the Americas, but analysis of ancient DNA reveals that a form of the disease was present in Argentina and Canada much earlier ¿ìè¶ÌÊÓÆµ
LifeFossils show puzzling lack of evolution during last ice age peak Thousands of fossils from the La Brea tar pits in California show no signs of mammals and birds evolving in response to shifting temperatures over the past 50,000 years ¿ìè¶ÌÊÓÆµ