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“Can dogs sense ghosts?  4,500-year-old Stonehenge mystery solved.”

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Accessed on 29 October 2025, 0004 UTC.

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Presented by Wednesday, October 29th Featured today:  A shipwreck. An underwater robot. And an Antarctic mystery.  Ancient rock found in drawer hints at liquid water on Mars  Zombie worms have gone missing  Yesterday’s overperformer: Archeologists think they solved a 4,500-year-old Stonehenge mystery  Was this email forwarded to you? Subscribe here to join our community of 300K+ science and technology enthusiasts BOOdle  Can dogs sense ghosts? Dogs detect what we can’t—perhaps more than we realize. READ NOW Sponsored Streamline Your Marketing Workflow With These Free Excel Templates Are your spreadsheets helping you move faster—or slowing you down? Masters in Marketing’s free Excel Toolkit includes 10 customizable templates used by real marketing teams to plan smarter, track better, and stay organized across campaigns. Inside this toolkit, you’ll get: A campaign planning template that keeps teams aligned A content calendar format built for busy marketers Budget and performance trackers designed to show ROI fast Plug-and-play sheets that require zero complex formulas Unlock the toolkit. Free when you subscribe to the Masters in Marketing newsletter. Get practical marketing insights, twice a week, from experts who know what works. GET THE TEMPLATES ICYMI  Meteorite found in a drawer in 1929 contains ancient evidence of liquid water on Mars Approximately 742 million years ago, this rock formed—and interacted with a particular substance. READ NOW Quiz  How much heavier are elephants than hippopotamuses?  5%  25%  75%  150% Find out the answer at the bottom of this newsletter.  Five Things  The quest to find ‘Endurance’ shipwreck uncovered an Antarctic mystery An underwater robot found something far stranger beneath the ice. READ NOW Red Spider Nebula glows in ethereal new JWST image Twinkle twinkle spidey star. READ NOW Zombie worms have gone missing Biologists investigate the case of the lost ‘bone devourers.’ READ NOW Worker bees oust queen bees if they smell weakness The hive rulers produce a pheromone that helps keep workers loyal. READ NOW Rhinos once lived in Canada A newly discovered species of Arctic rhino lived 23 million years ago. READ NOW Around the Web   How to sharpen scissors  Why you dream about your teeth falling out  How to remove old stains from your dining chairs  Study reveals genetic secrets of one of world’s rarest penguins We’re open to feedback. Reach out here. Connect with 300K+ science and tech enthusiasts Become a partner and reach hundreds of thousands of inquisitive readers. Contact us here. Quiz Answer  How much heavier are elephants than hippopotamuses?  25% On a European island 15,000 years ago, things were quite different. That’s because it was home to pygmy hippos and dwarf elephants.  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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Author: kh6jrm@gmail.com

I am the retired news director of Pacific Radio Group stations on the Island of Hawaii. I am a retired Lt. Col., USAF Reserve. I am a FCC-licensed Amateur Radio Operator, holding the Amateur Extra Class License. I am a substitute teacher for the state of Hawaii Department of Education. View all posts by kh6jrm@gmail.com