greenbiz.com

9YVQG TIL that the distinctive nose of the Shinkansen 500 bullet train prevents sonic booms whenever it exits a tunnel and was discovered when scientists studied the shape of a kingfisher's beak to learn how it hit the water at high speed
jmjQ TIL - Pepsi made a biodegradable chip bag that was so loud people complained until it was no longer used. This chip bag ranked in at 95dB (about as loud as a subway train)
lyAG Til: Ralph’s (a grocery store in Southern California) turns all non-donateable food waste into biogas which they use to help power their warehouse. The byproduct of that is then composted and sold as fertilizer to local farms.