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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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- Major twister hits Oklahoma: Its speed, which largely determines the damage it causes, is still unknown
- Why a tornado forms: Tornadoes start with a thunderstorm. But they also require other ingredients, such as instability.
- A mind for math: A part of the brain associated with making memories may also predict success in learning math
IN DEMAND
View larger image | With the start of the Green Revolution in the 1940s, farming became increasingly commercial and large-scale, and the need for fertilizer rose dramatically. Mining of phosphate rock took off (tan), while the use of other phosphorus sources such as manure saw only modest gains. Now efforts focus on increasing the use of such alternative sources.
Credit: D. Cordell et al/Global Environmental Change 2009
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