Acting Out Dreams Predicts Parkinson's and Other Brain Diseases

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January 27, 2023

Neuroscience Acting Out Dreams Predicts Parkinson's and Other Brain Diseases Enacted dreams could be an early sign of Parkinson's disease By Diana Kwon

Extraterrestrial Life The Search for Extraterrestrial Life as We Don't Know It Scientists are abandoning conventional thinking to search for extraterrestrial creatures that bear little resemblance to Earthlings By Sarah Scoles

Neuroscience Monogamous Prairie Voles Reveal the Neurobiology of Love Studies of prairie voles are providing surprising new insights into how social bonds form By Steven Phelps,Zoe Donaldson,Dev Manoli

Sponsor Content Provided by BATTELLE Climate Resilience: Impactful Innovation is Needed Today What’s most needed right now are outcome-driven, scientific approaches committed to delivering breakthrough technologies and capabilities—ones that leverage the fundamental knowledge of the past and apply it in new mission-driven methods that reach beyond what is possible today.

Climate Change Temperatures in One of Earth's Coldest Corners Are the Highest in 1,000 Years Temperatures in north-central Greenland are the highest in at least a millennium, contributing to ice melt that is raising global sea levels By Chelsea Harvey,E&E News

Geology Why Earth's Inner Core May Be Slowing Down The planet's solid inner core might rotate at a different rate than the rest of the planet, and that rate might be changing By Stephanie Pappas

Cognition Humans Can Correctly Guess the Meaning of Chimp Gestures A new finding that humans can correctly interpret the gestures of chimps and bonobos adds to growing research that suggests that human language may have evolved from a dictionary of hand and body signals By Ingrid Wickelgren

Archaeology Did Plants Domesticate Humans? Watch 'The First Entanglement' Archaeologists studying one of the birthplaces of agriculture find a complex interplay between human actions and the workings of nature and genetics. By Regina Sobel

Planetary Science Cataclysmic Collisions May Explain 'Forbidden' Exoplanets A new model could explain the scarcity of certain planet sizes By Daniel Leonard

Cancer Ants Can Sniff Out Cancer Supersmeller ants quickly learn to recognize tumors' signatures in mouse urine By Jude Coleman

Reproduction Antiabortion Heartbeat Bills Are not Morally, Scientifically or Legally Sound A beating heart is neither a necessary nor sufficient standard to determine the start of life, making antiabortion heartbeat bills morally and legally wrong By Christina Han,Cara C. Heuser

Astrophysics Should You Really Worry about Solar Flares? The sun is unleashing powerful outbursts that could strike Earth, but these events are far more common—and much less worrisome—than some hyped headlines suggest By Ed Browne

Microbiology This Overlooked Scientist Helped Save Washington, D.C.'s Cherry Trees Mycologist Flora Patterson helped make the USDA fungus collection into the world's largest. She also made a mean mushroom "catsup" By Katie Hafner,Hilda Gitchell,The Lost Women of Science Initiative

FROM THE STORE Scientific American Volume 322, Issue 5

BRING SCIENCE HOME Exploring Enzymes Ready, set, react! Learn how enzymes power everything from our digestion to protecting our cells from damage--and watch them in action in this activity! Credit: George Retseck Have you ever wondered how all the food that you eat gets digested? It is not only the acid in your stomach that breaks down your food—many little molecules in your body, called enzymes, help with that too. Enzymes are special types of proteins that speed up chemical reactions, such as the digestion of food in your stomach. In fact, there are thousands of different enzymes in your body that work around-the-clock to keep you healthy and active. In this science activity you will investigate one of these enzymes, called catalase, to find out how it helps to protect your body from damage.

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