What Is the ‘Mysterious Black Goo’ in Venezuela?

Since 1986, a strange, black sludge—known to locals as “La Mancha Negra”—has terrorized city streets, inspiring many myths. Is it oil seepage? An offering from aliens? Political sabotage? [View in Browser]( [Popular Mechanics]( [SHOP]( [EXCLUSIVE]( [SUBSCRIBE]( [What Is the ‘Mysterious Black Goo’ in Venezuela?]( [What Is the ‘Mysterious Black Goo’ in Venezuela?]( Since 1986, a strange, black sludge—known to locals as “La Mancha Negra”—has terrorized city streets, inspiring many myths. Is it oil seepage? An offering from aliens? Political sabotage? [Read More]( [Why Some People Believe the ‘Betz Mystery Sphere’ Is a Piece of Alien Technology]( [Why Some People Believe the ‘Betz Mystery Sphere’ Is a Piece of Alien Technology]( The Betz sphere conspiracy theory continues to persist. Is there any validity to it? [Read More]( [Alternate text] [Alternate text] [A DIY Fix for Foundation Cracks]( [A DIY Fix for Foundation Cracks]( Concrete cracks have met their match. [Read More]( [A Pig's Brain Transcended Its Body, Surging to Life on Its Own. Humans May Be Next.]( A Pig's Brain Transcended Its Body, Surging to Life on Its Own. Humans May Be Next.]( With one groundbreaking experiment, scientists ventured into unexplored realms of neurological function. [Read More]( [Alternate text] [Alternate text] [Hidden in Plain Sight: 2 Next-Gen Camo Systems Concealing U.S. Soldiers]( [Hidden in Plain Sight: 2 Next-Gen Camo Systems Concealing U.S. Soldiers]( When it comes to advancements in night vision and thermal imaging systems, the beauty is in the simplicity. [Read More]( [Why High-Powered Laser Guns Are Finally Coming to U.S. Navy Warships]( [Why High-Powered Laser Guns Are Finally Coming to U.S. Navy Warships]( Lasers fire at the speed of light—and that means unlimited firing opportunities. [Read More]( [Alternate text] [7-Minute Workouts That Burn Fat]( [LiveIntent Logo]( [AdChoices Logo]( [Need Assistance? Contact Us.](mailto:pmpmembership@popularmechanics.com) Follow Us [Unsubscribe]( | [Privacy Notice]( | [CA Notice at Collection]( Popular Mechanics is a publication of Hearst Magazines. ©2024 Hearst Magazine Media, Inc. All Rights Reserved. This email was sent by Hearst Magazines, 300 West 57th Street, New York, NY 10019-3779