Plus, who was the first scientist? And what's the difference between a duke and an earl anyway?

Happy Tuesday You'd think that a 42-ton (38-metric-ton) sculpture would be pretty difficult to lose. But that's exactly what happened to "Equal-Parallel: Guernica-Bengasi," a 1986 work by sculptor Richard Serra. Learn about nine more things that went missing without a trace. How Did Elisa Lam End Up Dead in a Hotel Water Tank? Canadian student Elisa Lam went missing in 2013 and the mystery surrounding her death captured national attention. So what really happened to this 21-year-old? Read more >> What's the Difference Between a Duke and an Earl? The Brits have a complex, overlapping web of dukes, earls, viscounts(!) and more. We'll walk you through it. Read more >> 6 Red-Hot Facts About the Red Giant Star Arcturus Did you know that this bright star releases roughly 215 times more heat than the sun? Read more >> Running on Empty? How Bad Is It for Your Car? Shocker: Your car hates it. Here's why. Read more >> Is the Dream of Cold Fusion Still a Possibility? Achieving cold fusion would be a crazy energy coup. Could we ever pull it off? Read more >> Who Was the First Scientist? We've been observing and experimenting in the name of science for centuries. But who deserves the honor of being humanity's very first scientist? Is it Euclid, Darwin, Galileo or someone else? Read more >> Q: Are you a dog or cat person?   We're changing it up a bit this week and taking a poll! Let us know if you're a dog or cat lover by clicking on one of the buttons below. Keep an eye out for the results.   Dog Cat Copyright © 2021 HowStuffWorks, All rights reserved. You are receiving this email because you opted in at our website howstuffworks.com Our mailing address is: HowStuffWorks 1501 Main St Suite 101 Venice, CA 90291 Want to change how you receive these promotional emails? You can update your preferences or unsubscribe from this list