Your Soul Has Physical Weight—And It Disappears When You Die, Controversial Theory Suggests

One researcher could have changed everything we know about death. But does the science hold up against scrutiny?

View in Browser  DIGITAL ISSUES GEAR REVIEWS SUBSCRIBE Your Soul Has Physical Weight—And It Disappears When You Die, Controversial Theory Suggests One researcher could have changed everything we know about death. But does the science hold up against scrutiny? Read More These 'Ghost Particles' Might Be the Reason Anything Exists At All Scientists from two large neutrino studies in the U.S. and Japan join forces to see if the elusive particle might lie at the heart of our matter-dominated existence. Read More Scientists Just Discovered a Quantum Physics Loophole—And It Could Finally Unlock Interstellar Travel They found a way to sneak around an important law governing atoms. Read More We Compiled a List of PopMech's Very Best Editor Picks Across All Categories We test products all year, every year—here is the best of the best. Read More Scientists Are Pretty Sure They Found a Portal to the Fifth Dimension It's probably in this weird particle. Read More Most People Say They Hate Printers: We've Tested The Best to Find Ones That Won't Make You Pull Your Hair Out Like it or not, we still don't live in a paperless world (yet). Read More Need Assistance? Contact Us. Follow Us Unsubscribe | Manage Preferences | Privacy Notice | CA Notice at Collection Popular Mechanics is a publication of Hearst Magazines. ©2025 Hearst Magazine Media, Inc. All Rights Reserved. This email was sent by Hearst Magazines, 300 West 57th Street, New York, NY 10019-3779