Science & Society

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gmo salmon

Regular salmon may soon be joined in grocery cases by genetically engineered fish (shown). The FDA has approved genetically modified salmon for human consumption.


Pure cocaine is hard to come by in South America. Instead, coca paste is often adulterated with caffeine, making a combo that packs a powerful punch. 

Earth's stratosphere

DARKENED SKY  Spraying tiny particles into the stratosphere could help combat global warming, a new book on geoengineering asserts.

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