Cannabis was used as an intoxicant as early as 2,800 years ago

Cannabis is one of the most commonly used psychoactive plants today. However, it is difficult to determine archaeologically how cannabis was used in prehistoric times. Plant parts such as flowers, leaves and resins are perishable ...

Polar vortex faltering weeks earlier than ever recorded

Meteorologists said Friday they were observing an unprecedented early disruption of the polar vortex, raising the risk of cold snaps across the Northern Hemisphere, though there remains significant uncertainty.

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