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Patent Claims Television Can Land Plane in Fog

First Glances at New Books

Back Matter

Back Matter

Front Matter

Organs Kept Alive in Tubes to Throw Light on Life

Listen for Shortwave Radio Signals from Milky Way

Most of Light in Night Sky Comes from Sun, Not Stars

New Tool of Science Is Itself Little Known

“Uncertainty Principle” Extended to Include Biology

Tablet Reveals Extent of Famous Xerxes’ Empire

Despite Leap Years, Calendar about Three Hours in Error