Your beer can tell you where you've been, according to a new study by researchers in Utah. No, not because of the strength of your hangover -- it's all about chemistry.
Beer, bottled water and soda have a natural chemical signature related to geographic location, and drinking them leaves a chemical fingerprint in your hair. The fingerprint could be used to track your travels over time, according to the study, published in the Journal of Agricultural and Food Chemistry.
A large Cold War supply of helium-3 has begun to rapidly run out, due to heavy demand from U.S. scientists who need the gas for neutron detectors and cryogenic experiments. Almost 60,000 liters of helium-3 were used in 2007 and 2008, compared to just 10,000 liters used annually about 10 years ago. A House subcommittee has been convened to search for a solution this week, New Scientist reports.