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- Sweet Confusion: Does high fructose corn syrup deserve such a bad rap?
- Closed Thinking: Without scientific competition and open debate, much psychology research goes nowhere
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- Better chow yields more milk: A more nutritious form of corn for dairy cows boosts farm profits, teen investigator finds
- 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
RISING DAWN
The evolutionary extravaganza of the Cambrian period about 550 million years ago spawned early arthropods such as the Olenoides trilobite and the Sidneyia spider-cousin, immortalized here in Canada’s Burgess Shale. New DNA analyses suggest that common ancestors for such creatures diverged some 200 million years before.
Credit: Smithsonian Institution, courtesy of Douglas Erwin
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