A fossil reveals early relatives of spiders — armed with claws
A Utah fossil shows early relatives of spiders and scorpions already had distinctive front claws 500 million years ago.
Author: Tom Metcalfe
When were dogs domesticated? The oldest known dog DNA offers clues
Two new studies suggest that genetically stable dogs were living among humans in Europe by about 14,000 years ago.
A new study questions when people first reached South America
Data suggest people lived at Chile’s Monte Verde site thousands of years later than thought, challenging key “pre-Clovis” evidence. Not all agree.