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Science Corner: August 2012 Archives

Robot camouflage

Science commentator Steve Campana tells us why scientists have developed a way to disguise or highlight machines.

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Scientific research in the Arctic

Steve Campana is north of Edmonton on Victoria Island studying lake trout.

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Why can we tolerate drinking hot liquids when the same liquid would probably scald us if applied directly to our skin?

The pain threshold is 45 degrees Celcius . We avoid burning our mouths with liquids that are hotter than that in various ways: when we take small sip we suck in air that cools the liquid, and our saliva both cools the liquid and insulates our mouth.