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- Fuzzy future: Kids may suffer impaired vision from spending too little time outdoors, studies suggest
- Building with moon rocks: Working on the moon with lunar soil and grit could prove easier, more efficient and less costly than using earthly materials
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Despite the variety in looks, the butterflies in the top row represent just local color variations of a single species, Heliconius melpomene. Each mimics a local color variation of Heliconius erato (bottom row). Photographs are from the Web site at http://abacus.gene.ucl.ac.uk/jim/jim.html.
Credit: Mallet
Found in: Biology
Found in: Biology
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