<![CDATA[Lewis and Clark’s mercury-laced poop helped archaeologists trace their expedition]]>

<![CDATA[Lewis and Clark’s mercury-laced poop helped archaeologists trace their expedition]]>Welcome to a poisonous trail of number two.

The post Lewis and Clark’s mercury-laced poop helped archaeologists trace their expedition appeared first on Popular Science.

]]>https://postcall.pub/topic/0c1703dd-91e8-4ea6-bd3d-0355addd1182/lewis-and-clark-s-mercury-laced-poop-helped-archaeologists-trace-their-expeditionRSS for NodeSun, 20 Sep 2026 20:56:24 GMTWed, 16 Sep 2026 12:58:00 GMT60