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From powering airplanes to replacing nuclear energy, algae has been touted as a green energy miracle. So if our waterways are already filled with the stuff, why isn’t it filling the world’s skies with biofueled planes? Algae is a tricky creature that presents a lot of challenges and misconceptions. Here’s why it’s difficult to harness—and why it could big a big payoff.

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9D0B TIL the traditional black and white soccer ball was made by Adidas in the late 60’s so that the ball could be viewed more easily on black and white television.
R5vYQ TIL that lobsters were once considered the poor man's chicken. In the 18th and 19th centuries, lobsters were so abundant along the northeastern coast of North America that they were often fed to prisoners, apprentices, and servants multiple times a week.
kpWB TIL in 2012 the NYPD declared a couple to be “professional agitators” because they filmed videos of police conducting stop-and-frisks and uploaded them to YouTube. Cops posted their mugshots in a stationhouse and warned officers to be on guard against them.
VNk4 TIL: Some lakes are stocked with fish by dropping hundreds of fish out of an airplane flying over.
PdwL TIL that in 1994, an American figure skater hired a hitman to smash the leg of her main rival.