Tag Archives: Americas

But a surprising number of the country’s most invasive alien plants only showed up a few

Some hug the highways, others sprawl across forests, take over ponds, or blanket grasslands. Many [...]

500-year-old Inca mummies reveal first DNA evidence that European colonists brought smallpox

500-year-old Inca mummies reveal first DNA evidence that European colonists brought smallpox to the Americas.