Feature
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NeuroscienceLegalization trend forces review of marijuana’s dangers
Marijuana legalization advocates tout pot’s medicinal benefits and low addictiveness, while critics point to its neurological dangers. Research shows that the reality is somewhere in the middle.
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CosmologyThe mysterious boundary
A debate has arisen over whether an astronaut passing a black hole’s point of no return would get stretched to death or flash-fried. Resolving the controversy may lead to new insights about gravity and more.
By Andrew Grant -
HumansBig babies: High birthweight may signal later health risks
A high birthweight might signal health risks later in life.
By Nathan Seppa -
ArchaeologyWritten in bone
Researchers are reconstructing the migrations that carried agriculture into Europe by analyzing DNA from the skeletons of early farmers and the people they displaced.