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Here’s a fascinating science experiment that we’ll be trying this weekend: 

Put a blindfold on someone, take them to a park or a beach or a meadow and ask them to walk for as long as they can in a straight line. Then watch what happens.

Why Can’t We Walk Straight? from Robert Krulwich and the team at NPR in 2010.

More mysteries of the brain lurk in the archives.

via insteadofwatchingtv.

This caterpillar caravan is made of hundreds of pine processionary caterpillars (Thaumetopoea pityocampa) marching in a long nose-to-tail processional train when they’re ready to pupate. After finding soft soil to burrow, they’ll remain underground until they emerge as a Pine Processionary moth. But don’t touch! This particular caterpillar’s hairs secrete poison that can irritate human skin and dangerous to animals.

The above video is of another procession that actually begins to burrow. Narrated in French — the species can be found in pine woods across central and southern Europe, including France — they are called les chenilles processionnaires du pin.