January 26, 2024 3 min read Ancient DNA recovered from Brazilian remains shows that syphilis and other treponemal diseases originated some 10,000 years earlier than previously thought By Ewen Callaway & Nature magazine The spiral-shaped bacterium Treponema pallidum (artificially coloured) causes not only venereal syphilis but also the infectious diseases yaws and bejel. Remains of… Continue reading Syphilislike Diseases Have Plagued Humans for 14,000 Years
Tag: Quantum Stuff
Climate Disasters Prompt Another Home Insurance Company to Leave a State
January 26, 2024 3 min read The Hartford Financial Services Group is the latest insurer to say it won’t offer new policies to homeowners in California By Avery Ellfeldt & E&E News A home burns during the Dixie fire on July 24, 2021, in the Indian Falls neighborhood of unincorporated Plumas County, California. CLIMATEWIRE | Another… Continue reading Climate Disasters Prompt Another Home Insurance Company to Leave a State
Cats Can Hide Their Pain–But Not from AI
Household cats are a secretive species. Unlike dogs, they are masters at masking their feelings and intentions—possibly because of their evolutionary history as solitary hunters. This built-in stoicism makes it hard for cat owners and veterinarians to read signs of pain in a cat’s facial expressions and behaviors, but new artificial intelligence programs may be… Continue reading Cats Can Hide Their Pain–But Not from AI
The Part of the Brain That Controls Movement Also Guides Feelings
In recent decades, neuroscience has seen some stunning advances, and yet a critical part of the brain remains a mystery. I am referring to the cerebellum, so named for the Latin for “little brain,” which is situated like a bun at the back of the brain. This is no small oversight: The cerebellum contains three-quarters… Continue reading The Part of the Brain That Controls Movement Also Guides Feelings
55 Books Scientific American Recommends in 2023
The Scientific American editorial team learned a lot this year. We debated why we’ll never live in space, explored the deep ocean (sort of), and asked how dinosaurs got so big. We also read a ton of books. While of course there were quite a few science fiction books (we can’t help ourselves), we also… Continue reading 55 Books Scientific American Recommends in 2023
Cells Across the Body Talk to Each Other About Aging
Aging can seem like an unregulated process: As time marches along, our cells and bodies inevitably accumulate dings and dents that cause dysfunctions, failures and ultimately death. However, in 1993 a discovery upended that interpretation of events. Researchers found a mutation in a single gene that doubled a worm’s life span; subsequent work showed that… Continue reading Cells Across the Body Talk to Each Other About Aging
Astronomers Spy First Star-Forming Disk beyond the Milky Way
Making stars is a messy business. Although the process takes far longer than any human life span, we’ve sufficiently studied its various stages in stellar nurseries scattered around our galaxy to gain a decent overall grasp of how it works. It starts, in general, with a huge swirling cloud of gas and cosmic dust—like the… Continue reading Astronomers Spy First Star-Forming Disk beyond the Milky Way
Bad Science and Bad Statistics in the Courtroom Convict Innocent People
The city of New York recently witnessed a record payout to George Bell, falsely convicted of murder in 1999, after it emerged prosecutors had deliberately hidden evidence casting doubt on his guilt, giving false statements in court. Bell is the latest in a long line of people, especially Black Americans, unfoundedly convicted. More recently, Jabar… Continue reading Bad Science and Bad Statistics in the Courtroom Convict Innocent People
How to Choose an Environmentally Friendly Christmas Tree
The following essay is reprinted with permission from The Conversation, an online publication covering the latest research. Every year, Americans buy somewhere between 35 million and 50 million Christmas trees, and many more pull an artificial tree out of storage for the season. In all, about three-quarters of U.S. households typically have some kind of Christmas… Continue reading How to Choose an Environmentally Friendly Christmas Tree
‘Magical’ Error Correction Scheme Proved Inherently Inefficient
Unfortunately, the Reed-Muller code has a serious drawback: The number of bits required to encode a message increases exponentially with the number of variables. If you want a highly local code that corrects errors with just a handful of queries, you’ll need a lot of variables for long messages, and the Reed-Muller code will quickly… Continue reading ‘Magical’ Error Correction Scheme Proved Inherently Inefficient