Liz Minor, Large Lakes Observatory, talks about Lake Superior's biochemistry, including 1000-year-old carbon and newer carbon that incorporates residuals from weapons testing.

Old Carbon in Lake Superior

Minnesota Sea Grant and KUMD Radio (103.3 FM) are at it again. During this season, Sea Grant host Judy Zomerfelt delivers university research concerning aquatic systems and coastal communities to listeners — with a splash of fun.  The show aires at 7:45 AM every Wednesday morning.

Natural Sciences

Minnesota Sea Grant and KUMD Radio (103.3 FM) are at it again. During this season, Sea Grant host Judy Zomerfelt delivers university research concerning aquatic systems and coastal communities to listeners — with a splash of fun. The show aires at 7:45 AM every Wednesday morning.

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Old Carbon in Lake Superior

Old Carbon in Lake Superior