Cats Kill a Staggering Number of Species across the World

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December 15, 2023

Endangered Species Cats Kill a Staggering Number of Species across the World Domestic cats are cherished human companions, but a new study shows the enormous breadth of species the felines prey on when they are left to roam freely By Jack Tamisiea

Astrophysics Betelgeuse Will Briefly Disappear in Once-in-a-Lifetime Coincidence For six seconds tonight, the constellation Orion will appear to lose the vibrant red star at its shoulder—and scientists are thrilled By Meghan Bartels

Culture 55 Books Scientific American Recommends in 2023 The best fiction, nonfiction, history and sci-fi books Scientific American staff read in 2023 By Brianne Kane

Dinosaurs Tyrannosaur's Stomach Contents Have Been Found for the First Time The fossilized stomach contents of a tyrannosaur have been found for the first time, revealing what the fearsome predator ate By Jeanne Timmons

Sponsor Content Provided by Christopher & Dana Reeve Foundation Help, Guidance, Support: Living with Paralysis For those newly diagnosed, those who have lived with paralysis for years, or who care for someone living with paralysis, the Reeve Foundation provides the information and support needed to lead an independent and empowered life with spinal cord injury or paralysis.

Extraterrestrial Life New Evidence Discovered That Saturn's Moon Could Support Life Molecules in Enceladus's icy plumes suggest that alien life could exist in our solar system By Ling Xin

Engineering Ultrasound Enables Remote 3-D Printing--Even in the Human Body For the first time, researchers have used sound waves to 3-D print an object from a distance—even with a wall in the way By Rachel Berkowitz

Medicine FDA Approves First CRISPR Gene Editing Treatment for Sickle Cell Disease Most people with sickle cell disease who received a new gene editing treatment saw their pain resolve for at least one year, but longer follow up is needed By Sara Reardon

Behavior Why Some People Choose Not to Know Altruists seek to understand how their actions will affect others—while willful ignorance can free people to act selfishly By Linh Vu,Margarita Leib

Sleep Why Do We Dream? Maybe to Ensure We Can Literally 'See' the World upon Awakening A theory holds that dreams are a way for the visual cortex of the brain to "defend its turf" against being "taken over" to process inputs from other senses By Roberta McLain

Archaeology 73 Pre-Incan Mummies, Some with 'False Heads,' Unearthed in Peru Burials holding mummies with false heads have been discovered from the Wari Empire in Peru By Owen Jarus,LiveScience

Health Care A New Type of Heart Disease is on the Rise Problems with the heart, kidneys and metabolic health are all connected By Josh Fischman,Tanya Lewis,Elah Feder | 07:48

Microbiology Subterranean 'Microbial Dark Matter' Reveals a Strange Dichotomy The genes of microbes living as deep as 1.5 kilometers below the surface reveal a split between minimalist and maximalist lifestyles By Stephanie Pappas

BRING SCIENCE HOME Don't Forget! Test and Trick Your Short-Term Memory Can you trick your short-term memory into working better? Gather some volunteers and find out!  Credit: George Retseck If someone tells you to remember a phone number or address, it can feel like an easy task at first. You repeat the numbers to yourself, either aloud or in your mind. But after just a few seconds you might find yourself starting to doubt your own memory. Was it 5-7-3 or 3-7-5? Our brain is always seeking new and useful information, and as a result it will try to throw away information that seems old or irrelevant, such as a random string of numbers or an address. There are ways of helping our minds retain information, however, and in this activity you will explore ways that we lose and keep memories.

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