Does the human body replace itself every 7 years?

World's deepest shipwreck found — a US navy warship sunk in biggest sea battle of WWII | Does the human body replace itself every 7 years? | Why does copper turn green? Created for {EMAIL} | [Web Version]( June 29, 2022 CONNECT WITH LIVESCIENCE  [Facebook]( [Twitter](  [LIVESCIENCE]( Amazing science every day [SIGN UP]( ⋅ [WEBSITE](  [] Top Science News [] [World's deepest shipwreck found — a US navy warship sunk in biggest sea battle of WWII]( [World's deepest shipwreck found — a US navy warship sunk in biggest sea battle of WWII]( (Caladan Oceanic and Eyos Expeditions/AFP via Getty Images) Explorers have discovered the world’s deepest shipwreck after 78 years: a U.S. Navy destroyer escort that sank during World War II’s biggest naval battle. The explorers found the U.S.S. Samuel B. Roberts, nicknamed "Sammy B," 22,916 feet (6,985 meters) below the surface of the Philippine Sea near Samar, the third largest island of the Philippines. The wreck had snapped in half, and the two pieces lie just 33 feet (10 meters) apart. Full Story: [Live Science]( (6/28) [LinkedIn]( [Twitter]( [Facebook]( [Email]( Just the Facts, Ma'am "I stopped watching TV news a year ago, so sick of the bias everywhere. But in doing so, I was out of the loop. I decided to give 1440 a try & I've not been disappointed. Finally, Walter Cronkite style reporting! Just the facts. I also love that I can click a link to see more on many stories. Keep up the good work!" [Join for free now](. ADVERTISEMENT: [] Life’s Little Mysteries [] [Does the human body replace itself every 7 years?]( [Does the human body replace itself every 7 years?]( (FG Trade via Getty Images) There are trillions of cells in your body, but the cells that you have today are not all the exact same cells that you had yesterday. Over time, cells age and become damaged, so your body's cells are constantly replicating, creating their own replacements. This constant cellular activity has sparked a popular idea: Every seven years or so, your cells have been so productive that your body has replaced every part of itself — from your eyelashes to your esophagus. In other words, after about seven years of cellular replication, you're an entirely new collection of cells, inside and out. But is that true? Not exactly. Full Story: [Live Science]( (6/28) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] [Why does copper turn green?]( [Why does copper turn green?]( (Shutterstock) Copper has a beautiful reddish hue, but when exposed to the elements, the metal undergoes a series of chemical reactions that make it turn green. But why does this color transformation occur? The answer, it turns out, is similar to why iron rusts; if iron is left unprotected in open air, it will corrode and form a flaky orange-red outer layer. Full Story: [Live Science]( (6/28) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] Curious Creatures [] [Can you spot the crab in this photo? (Hint: It's under the fuzz.)]( [Can you spot the crab in this photo? (Hint: It's under the fuzz.)]( (Courtesy of the WA Museum. Photographer: Colin McLay) A crab species that was recently discovered in Australia fashions itself massive hats and coats made from living sponges, which makes the crustacean look like a wonderfully squeezable stuffed toy. (Don't be fooled, though — there's a tough exoskeleton beneath all the shaggy fluff!) Full Story: [Live Science]( (6/29) [LinkedIn]( [Twitter]( [Facebook]( [Email]( [] Daily Quiz [] POLL QUESTION: How long does it take for the body's skeletal cells to completely replace themselves, replicating the skeleton in its entirety? (Learn the answer [here]() [Vote]( [Less than 1 year]( [Vote]( [4 years]( [Vote]( [7 years]( [Vote]( [About 10 years](   [Sign Up]( | [Update Profile]( | [Unsubscribe]( [Privacy Policy]( | [Cookies Policy]( | [Terms and Conditions]( CONTACT US: [FEEDBACK](mailto:livescience@smartbrief.com) | [ADVERTISE]( Future US LLC © 1100 13th St. NW, Suite 1000, Washington, DC 20005