News
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ArchaeologyThe oldest known horseback riding saddle was found in a grave in China
The well-used saddle, dated to more than 2,400 years ago, displays skilled leather- and needlework. Its placement suggests its owner was on a final ride.
By Bruce Bower -
Health & MedicineMany sports supplements have no trace of their key ingredients
A chemical analysis of 57 supplements found that 40 percent had undetectable amounts of key ingredients. Only 11 percent had accurate amounts.
By Meghan Rosen -
EnvironmentThe most intense sunlight on Earth can be found in the Atacama Desert
On the Chilean Altiplano plateau, every square meter of the ground receives, on average, more solar power than Mount Everest and occasionally almost as much as Venus.