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Biology

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Tasty Brazil Nuts Stun Harvesters and Scientists

A Smithsonian biologist tracks the protein-rich nuts to understand their role in the Amazonian forest

Human embryonic stem cells in cell culture

Ailing? Just Add Cells

Now we can grow the cells from which all others derive, but ethical questions are involved

Ishihara Plate 9

Hey, Mr. White, That’s the Wrong Color for That

As hard as you might try, it’s not easy to keep folks from finding out that you’re color-blind

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Phenomena, Comment and Notes

Experiments at sea show we can cause phytoplankton to bloom in areas where it otherwise would not

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