Archaeologists have unearthed hundreds of Clovis stone tools at the 13,000-year-old campsite of Belson in southwest Michigan; Clovis people traveled to...
An international team of researchers has found extraterrestrial hydrocarbons, sulfurized and nitrogen-containing compounds in the Hamburg meteorite, which...
Humans began contributing to environmental lead pollution as early as 8,000 years ago, according to a new study published in the journal Environmental...