Humans were using tobacco at least 12,000 years ago

Charred seeds found in an ancient hearth in what's now Utah suggest that humans used tobacco more than 12,000 years ago -- 9,000 years earlier than previously documented.

Humans were using tobacco at least 12,000 years ago
Charred seeds found in an ancient hearth in what's now Utah suggest that humans used tobacco more than 12,000 years ago -- 9,000 years earlier than previously documented.