Chemistry
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We summarize the week's scientific breakthroughs every Thursday.
- 			 Chemistry ChemistryArgon keeps chips and lettuce crispA new technique replaces the air in food packages with argon instead of widely used nitrogen, improving taste and shelf life. 
- 			 Chemistry ChemistryTiny spheres may deliver oral insulinResearchers have developed microscopic spheres that can sneak insulin past the stomach so it can be absorbed in the small intestine. 
- 			 Chemistry ChemistryFaster, Better, Cleaner?Chemists have found that a new class of compounds, called ionic liquids, can substitute for widely used, messy organic solvents while also performing better and producing new products of interest to industry. 
- 			 Chemistry ChemistryFeline stimulant fends off mosquitoesPreliminary results suggest that catnip may be more effective at repelling mosquitoes than the widely used chemical DEET. 
- 			 Chemistry ChemistryChemists redesign natural antifreezeResearchers have synthesized a family of artificial molecules that resemble the compounds that keep Antarctic and Arctic fish from freezing. 
- 			 Chemistry ChemistryCarbon-70 fullerenes finally link upResearchers have coaxed the cage-like molecules of carbon-70 into zigzagging polymers. 
- 			 Chemistry ChemistryChemists make molecules with less messResearchers have found a way for a widely used, commercially important chemical reaction to produce less pollution. 
- 			 Chemistry ChemistryChemistry of Colors and CurlsChemists are using new technology and experiments to discover how hair becomes damaged and how to protect it. 
- 			 Chemistry ChemistryResearchers take an element off the tableResearchers have retracted their 1999 claim that they had created the heaviest member of the periodic table so far, element 118. 
- 			 Chemistry ChemistryLongest carbon-carbon bonds discoveredResearchers have found a type of carbon-carbon bond that's twice as long as the longest naturally occurring bond linking two carbon atoms. 
- 			 Chemistry ChemistryCarbon nanotubes show superconductivityResearchers have made individual superconductive carbon nanotubes that are just 0.4 nanometer wide. 
- 			 Chemistry ChemistryWee dots yield rainbow of molecule markersChemists report a scheme for creating a versatile color-based tagging system out of tiny atomic clusters, called quantum dots, that may enable scientists to track biomolecules with more finesse than ever. By Peter Weiss