News
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		AnimalsHornbills know which monkey calls to heed
Hornbills can tell the difference between two kinds of alarm calls given by monkeys.
By Susan Milius - 			
			
		Planetary ScienceRevisiting a forgotten planet
Engineers are readying a NASA spacecraft for a May 11 launch to Mercury, one of the least-explored planets in the solar system.
By Ron Cowen - 			
			
		EarthSmoking out a source of painful menses
Breathing in secondhand smoke may contribute to the development of menstrual cramps.
By Janet Raloff - 			
			
		EarthAllergic to computing?
The plastic cases of certain computer monitors emit a chemical—triphenyl phosphate—that can cause allergic reactions.
By Janet Raloff - 			
			
		Health & MedicineImmune response in brain sparks nausea
Ailments ranging from the common cold to many types of cancer can make people nauseous, an effect that may occur because signals from the brain suppress the muscle contractions required for digestion.
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		Health & MedicineCell therapy not just for Parkinson’s
Transplanted nerve cells can survive in the brains of people who have suffered strokes and may alleviate some brain damage.
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		Health & MedicineMaking scents of Alzheimer’s
Among people with mild symptoms of memory loss, a limited ability to recognize smells—along with an inability to detect the disability—has been linked to the future development of Alzheimer's.
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		Bean weevils get a kick out of mates
Breeding in stored grain throughout the tropics, bean weevils represent an unusually clear example of the evolutionary male-female arms race.
By Susan Milius - 			
			
		Squirrels save for the family’s future
Some female red squirrels hoard extra food for youngsters that haven't yet been conceived.
By Susan Milius - 			
			
		AstronomyNudging asteroid fragments toward Earth
New computer simulations detail how fragments of asteroids travel to Earth and rain down as meteorites.
By Ron Cowen - 			
			
		Materials ScienceNew work improves stainless steel surface
A novel electrochemical method improves the surface of stainless steel without making the metal brittle or prone to corrosion.
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		AnimalsSecond bird genus shares dart-frog toxins
Researchers have found a second bird genus, also in New Guinea, that carries the same toxins as poison-dart frogs in Central and South America.
By Susan Milius