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Scientists Make Light Cast a Shadow for First Time

In a discovery that challenges basic physics principles, researchers have shown that under specific conditions, a laser beam can block light and cast a visible shadow. The finding, made using a ruby crystal and precisely configured lasers, demonstrates an effect…

A cheap tablet hampered by outdated software

The latest Amazon Fire HD 8, updated last month and starting at $100, is a modest refresh, offering more RAM, a nominally upgraded camera and some new AI features. The general sales pitch, however, remains the same: You get a…

Celebrating the 50th Anniversary of the Arecibo Message

[CLIP: Sound of Arecibo message being sent] Rachel Feltman: For Scientific American’s Science Quickly, I’m Rachel Feltman. On November 16, 1974, humanity sent an unprecedented message into the stars. [CLIP: Frank Drake gives a speech on the day of the…