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We summarize the week's scientific breakthroughs every Thursday.
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		SpaceHubble, heal thyself
NASA scientists are cleared to remotely switch equipment on the Hubble Space Telescope in the hopes of restoring the orbiting observatory’s function by October 16.
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		Health & MedicineBody In Mind
Long thought the province of the abstract, cognition may actually evolve as physical experiences and actions ignite mental life.
By Bruce Bower - 			
			
		Materials ScienceMaterial Scientists: Cast Your Vote
You can vote early, if not officially.
By Janet Raloff - 			
			
		EarthPterodactyls may soar once more
Paleontologists and aeronautical engineers are designing a reconnaissance drone that will mimic the flight of an ancient flying reptile.
By Sid Perkins - 			
			
		ChemistryTrapping Compact Fluorescents’ Toxic Gas
New nanomaterials may offer a solution to mopping up a toxic pollutant associated with fluorescent lighting.
By Janet Raloff - 			
			
		ChemistryOops! A Fluorescent Light Breaks
Toxic mercury will be released whenever a fluorescent lamp breaks.
By Janet Raloff - 			
			
		ChemistryFluorescent bulbs offer mercury advantage
Featured blog: Switching to light bulbs that contain mercury might, surprisingly, reduce overall mercury releases to the environment. Plus, what to do when you break your fluorescent bulb.
By Janet Raloff - 			
			
		PhysicsA ‘novel’ chemistry to make fuel from sugar
It’s not alchemy, but it might sound like it: a new way to transform sugars from plants into gasoline, diesel or even jet fuel by passing the sugars over exotic materials.
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		AstronomyMcCain Is Bullish on R&D
Featured blog: John McCain weighs in on science and technology issues with long-awaited written responses to the Science Debate 2008.
By Janet Raloff - 			
			
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		NeuroscienceBreaking the Barrier
A technique combining ultrasound pulses with microbubbles may help scientists move therapeutic drugs across the brain’s protective divide.
By Tia Ghose - 			
			
		TechCops Might Get Pollution Sniffers
One day soon, precise up-to-minute air pollution data might be available at a street-by-street level.
By Janet Raloff