Airline passengers who sneak in cell phone calls, play with gaming devices or listen to their mp3 players during takeoff or landing probably won’t cause a plane crash, but they may risk a confrontation with flight attendants. Federal agencies and airlines typically err on the side of caution — even though researchers and aircraft companies have found almost no direct evidence of cell phones or other electronic devices interfering with aircraft systems.
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Bad moods can actually be good for you, with an Australian study finding that being sad make people less gullible, improves their ability to judge others and also boosts memory.
Stinking lagoons of pig manure created by thousands of animals in giant hog farms can pollute rivers, poison groundwater and pump out clouds of methane and carbon dioxide. So finding alternative uses for the slurry – to generate electricity, say – makes a lot of sense. The problem was that no one has been certain which way of doing it makes the most electricity for the least greenhouse gas production.
