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The Serious Work of Balloons, 1916

Reported in Scientific American, This Week in World War I: February 12, 1916. The cover of the February 12, 1916, issue of Scientific American has an image of a military balloon: “Hauling a French observation balloon to a new signalling post.” The balloon in question is a Parseval-Sigsfeld kite balloon, first introduced in Germany in 1896, but used by all armies involved in the First World War...

STAFFFebruary 12, 2016 — Dan Schlenoff

What Little Babies See That You No Longer Can

Before developing perceptual constancy, three- to four-month-old babies have a striking ability to see image differences that are invisible to adults. They lose this superior skill around the age of five months...

February 11, 2016 — Susana Martinez-Conde

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