Horse-riding changed Eurasia's ethnic profile: studies

Horse domestication changed the face of Eurasia, helping ancient Huns and Mongols supplant western "Indo-European" farmers in an incremental westward drive that also brought Hepatitis B and plague, scientists said Wednesday.

Reconnection tames the turbulent magnetic fields around Earth

When the solar wind - which is really a driving rain of charged particles from the sun - strikes Earth's protective magnetic field, the shock generates roiling, turbulent magnetic fields that enshroud the planet and stretch ...

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