| | | Archaeological Intelligence  | | | The archaeologists behind the video believe the man covered his head with a bowl to protect himself from volcanic debris. | |
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| | This Day in History  | | On June 21, 1788, the United States Constitution went into effect after New Hampshire became the ninth state to ratify the document. The ballpoint pen wouldn’t be invented for another 100 years, so how did our Founding Fathers write our country’s supreme set of laws? | You likely know a quill was involved, specifically a goose quill. However, the ink used is less well known. Scribes used iron gall ink made with tannic acid (from oak galls), iron (from nails or iron scraps), and a binder (typically gum arabic). According to the National Archives, the ink looked light in color when first applied to parchment, but darkened to a purplish black through oxidization. -Annie Colbert, Editor-in-Chief | |
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| | | | Three Things  | | We ruined some pizza so you won’t have to. | | | Your high school science teacher was wrong. | | | It has 4.5 stars on Amazon. | | Get more deals from the Goods newsletter here. |
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| | Dear Popular Science…  | This week we asked: Have you ever been whale watching? | EK told us: | I was on a whale trip to see them and we came across a big area of krill. First came squid, a free for all. All the hungry creatures were excited about the krill, and then all of a sudden, we were surrounded by blue whales. They appeared to be turquoise and were beautiful. Eventually they all sounded at the same time and we were surrounded by whale tails. An unforgettable experience. | Thanks to everyone who wrote in. |
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| | | | Connect with 300K+ science and tech enthusiasts | | Become a partner and reach hundreds of thousands of inquisitive readers. |
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| | | | | |  Today’s newsletter was produced by Annie Colbert
| Thank you for being part of a community of 300,000+ science and technology enthusiasts. | Let us know how we’re doing. |  feedback@popsci.com
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The best way to 
Wearable jacket 
In 1867, beef tea enemas were recommended for use in the treatment of what ailment?
Alcohol withdrawal
How should you NOT kill a tick?
Poke it with a needle
A baby pygmy hippo born in Berlin was named after what carb?
Bread roll
The science behind a 
7 myths and facts about the 
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