Weird Muons May Point to New Particles and Forces of Nature

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September 17, 2021

Particle Physics Weird Muons May Point to New Particles and Forces of Nature A mismatch between theory and experiment could explain big physics mysteries By Marcela Carena

Agriculture Here's How Much Food Contributes to Climate Change Animal-based foods produce about twice the emissions of plant-based ones, a new comprehensive study finds By Andrea Thompson

Vaccines An mRNA Pioneer Discusses How Her Work Led to the COVID Vaccines Biochemist Katalin Karikó and her colleague Drew Weissman were recently awarded a $3-million Breakthrough Prize for their work By Tanya Lewis

Public Health Masks Protect Schoolkids from COVID despite What Antiscience Politicians Claim Florida governor Ron DeSantis and politicians in Texas say research does not support mask mandates. Many studies show they are wrong By Marla Broadfoot

Animals How to Help Your Dog Adapt to a Postpandemic World As owners head back to offices, pets' anxiety and frustration may rise By Katie Weeman

Mental Health The Top 10 Innovations in Mental Health A look at methods and technologies that are transforming the work of psychiatrists and psychologists

Public Health A New Nurse Struggles to Save Patients in a New COVID Surge Cases peaked, then fell, then rose again. "It is so much worse this time" By Kathryn Ivey

Mathematics Infinity Category Theory Offers a Bird's-Eye View of Mathematics Mathematicians have expanded category theory into infinite dimensions, revealing new connections among mathematical concepts By Emily Riehl

Animals Extreme Birding Competition Is a Cutthroat Test of Skill, Strategy and Endurance A team of birders races to find as many bird species as possible in 24 hours By Kate Wong

Medicine Why Kids Beat Back COVID Better Than Adults Innate immunity might be the key to why children have fared better with the virus. But the Delta variant poses fresh unknowns By Smriti Mallapaty,Nature magazine

Space Exploration SpaceX's Starship Could Rocket-Boost Research in Space The platform could aid climate science, space junk cleanup and planetary exploration By Maddie Bender

Drug Use Opioids and Cigarettes Are Both Harmful, but Opioids Have Valid Medical Uses We mustn't apply the same harm reduction strategies to both By Maia Szalavitz

Privacy New Encryption Technique Better Protects Photographs in the Cloud Users can display images as usual, but neither attackers nor tech platforms can see them By Harini Barath

FROM THE STORE Scientific American Volume 325, Issue 4

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BRING SCIENCE HOME Warm in the Sun Cool in the shade? Learn about how different materials absorb and reflect solar radiation to make outdoor environments so variable.  Credit: George Retseck Have you ever walked across a large parking lot on a sunny summer day and felt like you were roasting? That's because the asphalt gets really hot in the sun! Streets, buildings and parking lots can get so hot, they raise the average temperature of urban areas by a few degrees relative to surrounding rural areas. Do you think natural materials also heat up in the sun—or only human-created materials? Try this activity to find out!

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