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Expressing lamprey feces
Expressing lamprey feces
Expressing lamprey feces
Expressing lamprey feces

USGS scientist Nick Johnson isn’t afraid to get dirty. Here he is expressing green feces from a parasitic sea lamprey. DNA in the feces may help USGS scientists discover the identity of sea lamprey’s last meal. 

USGS scientist Nick Johnson isn’t afraid to get dirty. Here he is expressing green feces from a parasitic sea lamprey. DNA in the feces may help USGS scientists discover the identity of sea lamprey’s last meal. 

Various types and sizes of plastics collected from the Kinnickinnic River, WI
Plastics collected from the Kinnickinnic River, WI
Plastics collected from the Kinnickinnic River, WI
Plastics collected from the Kinnickinnic River, WI

Various types and sizes of plastics collected from the Kinnickinnic River, Milwaukee, WI.

Eastern Tiger Salamander
Eastern Tiger Salamander
Eastern Tiger Salamander
Eastern Tiger Salamander

Eastern tiger salamanders are on the move! This one was spotted crossing the road at St. Croix Wetland Management District in Wisconsin. Tiger salamanders mostly eat small insects and worms.

Photo by Caitlin Smith/USFWS.

Eastern tiger salamanders are on the move! This one was spotted crossing the road at St. Croix Wetland Management District in Wisconsin. Tiger salamanders mostly eat small insects and worms.

Photo by Caitlin Smith/USFWS.

Image shows a sample of pyrrhotite against a black background
Pyrrohtite
Pyrrohtite
Pyrrohtite

Pyrrhotite is an iron sulfide mineral related to iron pyrite, which is one of the minerals known as Fool's Gold. Pyrrhotite, although not one of the Fool's Gold minerals, is sometimes called magnetic pyrite as it is weakly magnetic. It is most valued as a collectors mineral.

Pyrrhotite is an iron sulfide mineral related to iron pyrite, which is one of the minerals known as Fool's Gold. Pyrrhotite, although not one of the Fool's Gold minerals, is sometimes called magnetic pyrite as it is weakly magnetic. It is most valued as a collectors mineral.

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