The famous Hollywood sign that overlooks Los Angeles is turning 100 this year -- but its longevity wasn't always assured. Learn its history in this episode of BrainStuff, based on this article: sign-birthday.htm">https://history.howstuffworks.com/american-history/hollywood-sign-birthday.htm

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Low- and no-alcohol beers are now just as tasty as the alcoholic versions thanks to a few advances in brewing technology. Learn the basics of how brewers do it in this episode of BrainStuff, based on this article: non-alcoholic-beer.htm">https://recipes.howstuffworks.com/food-science/brew-non-alcoholic-beer.htm

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E-commerce retailers like Amazon are able to offer next-day or even same-day shipping thanks to highly organized, centralized, data-driven systems of warehousing and transportation. Learn more in this episode of BrainStuff, based on this article: fast-delivery.htm">https://money.howstuffworks.com/amazon-fast-delivery.htm

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It's not your imagination: Some seasons and dates have more birthdays than others. Learn the most and least popular birthdates (and how they're changing) in this episode of BrainStuff, based on this article: popular-birthdays.htm">https://people.howstuffworks.com/culture-traditions/genealogy/most-popular-birthdays.htm

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Science fiction tells us our future depends on giant, humanoid robots protecting us and punching monsters. But could we really build those machines? Learn how close we are in this classic episode of BrainStuff, based on this article: build-own-gundams.htm">https://science.howstuffworks.com/could-build-own-gundams.htm

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As Prohibition came to an end, Al Capone's mobsters set their sights on the Chicago milk market. Learn about the Milk Wars in this episode of BrainStuff, based on this article: milk-wars.htm">https://history.howstuffworks.com/historical-events/chicago-milk-wars.htm

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For the past hundred years, paleoartists have depicted T. rex with a mouth like a crocodile's -- toothy and lipless. But new research suggests these dinos may have had lizard-like lips. Learn more in this episode of BrainStuff, based on this article: rex-lips.htm">https://animals.howstuffworks.com/dinosaurs/t-rex-lips.htm

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Terms like 'alpha wolf' are misleading -- in the wild, wolf packs are ruled by the wolves' parents, not through a pecking order. Learn more in this episode of BrainStuff, based on this article: pack-mentality.htm">https://animals.howstuffworks.com/mammals/wolf-pack-mentality.htm

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Einsteinium is a heavy, radioactive element that only exists on Earth when humans create it. Learn how it was first discovered and what we're still learning about it in this episode of BrainStuff, based on this article: https://science.howstuffworks.com/einsteinium.htm

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Bulletproof vests have certainly saved lives, but exactly how bulletproof are they? Learn what they're made of and how they can fail to protect wearers in this episode of BrainStuff, based on this article: bulletproof-are-bulletproof-vests.htm">https://science.howstuffworks.com/how-bulletproof-are-bulletproof-vests.htm

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