Health Health

Thursday

Cows that consume feed, grass or water contaminated with radioactive iodine-131 can concentrate the element in their milk. Peter Elvidge/iStockphoto.com hide caption

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Peter Elvidge/iStockphoto.com

Wednesday

David Wilson of Florida, with the Stop Infant Circumcision Society, works on a readies a sign for a protest in Washington last March. Tom Williams/Roll Call/Getty Images hide caption

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Tom Williams/Roll Call/Getty Images

Red #40, Blue #1, Yellow #6 - a rainbow of food dyes. Josh Roulston/Flickr hide caption

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Josh Roulston/Flickr

Tuesday

Ultrasound scan of twins at 4 months. Getty Images hide caption

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Getty Images