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Pangea Conundrum
The existence of the supercontinent Pangea, which formed about 300 million years ago and broke up about 200 million years ago, is a cornerstone of plate tectonics, and processes resulting in its assembly and fragmentation have governed the evolution of Earth's crust for 500 million years.
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Teenage DNA detectives expose US fish fraud
Up to a quarter of fish in stores and restaurants in New York City was mislabelled as a more expensive variety, according to samples collected by two US teenagers and tested with genetic "barcoding" methods.
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Satellites track Mexico kidnap victims with chips
Affluent Mexicans, terrified
of soaring kidnapping rates, are spending thousands of dollars
to implant tiny transmitters under their skin so satellites can
help find them tied up in a safe house or stuffed in the trunk
of a car.
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