Learn about the chirping of a cricket (Korogi) in 90 seconds
In the fall crickets chirp incessantly in the grass. Can you tell the chirping of a cricket from other insects? Learn about crickets just in 90 seconds!
Learn how to draw concentrated linework in 90 seconds
Learn what the 12-hue color wheel is in 90 seconds
Learn about eyestrain and short-sightedness in 90 seconds
Learn how to generate profit in 90 seconds
