Plus 2D barcodes, grass and self-aware animals

Happy Tuesday Often credited with inventing the light bulb, this American scientist earned the nickname "The Wizard of Menlo Park." Do you know his name? Find out in our article.     Why Does Chocolate Turn White? And no, we're not talking about the white chocolate that gets its creamy hue from a lack of cocoa solids. Read more >> Mirror Testing and Self-awareness in Animals Only a handful of nonhuman animals have passed this test in self-recognition studies. Read more >> Why Golf Course Grass Looks So Perfect If you're willing to obsess over your lawn, you can achieve pristine greens as well. Read more >> How QR Codes Work We scan them at restaurants all the time, but how does your phone turn all those squares into a web page? Read more >> Preventing Hearing Loss at Concerts and Movies Ear protection isn't just for factory workers and others with loud jobs. Read more >> The Easiest Way to Convert Temperatures If you're a math whiz, converting from Celsius to Fahrenheit is already a breeze. But since not everyone is gifted when it comes to numbers, we have an easy-to-remember, easy-to-calculate shortcut. Read more >> Q: Which historical figure would you like to have dinner with?   Reply to this email with your first name and answer so we can feature you in a future newsletter! The Results Are In ...   According to our poll 29% of people would rather have it always be summer while 71% would prefer it to always be fall.    What did you think of this email?   Copyright © 2023 HowStuffWorks, All rights reserved. You are receiving this email because you opted in at our website howstuffworks.com Our mailing address is: HowStuffWorks 4235 Redwood Ave Marina Del Rey, CA 90066 Want to change how you receive these promotional emails? You can update your preferences or unsubscribe from this list