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Defense against Poison Gas, 1915

Reported in Scientific American , This Week in World War I: June 12, 1915 Germany (taking a cue from France) first used poison gas on a large scale against Allied troops manning trenches near Ypres, Belgium, on April 22, 1915...

STAFFJune 12, 2015 — Dan Schlenoff

Context Matters When It Comes to Travel Time

People will often feel that the return trip covering the same geographical distance requires less time to complete. It doesn't. When all factors are equalized--same distance, traveling at approximately the same speed, no external delays, roughly the same number of rest stops--the duration of the return trip will be almost identical to the original journey...

June 11, 2015 — Krystal D'Costa

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