Chemistry

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Trinity nuclear test

FALLOUT FORENSICS  A new technique allowed researchers to accurately estimate the energy release from the 1945 Trinity nuclear test in New Mexico (shown). The method could help regulators enforce nonproliferation treaties, the researchers say.

balloons

HEFTY HELIUM  A reservoir of more than a trillion liters of helium gas are stashed away beneath Tanzania, enough to fulfill global helium demand for everything from party balloons to MRI machines for years.

Ancient wine jug

WINE TIME  A piece of a roughly 6,300-year-old jar found in Greece contains chemical evidence of fermented grapes, making it the oldest known example of wine making in Europe, and perhaps in the world.

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