Searching for the Universe's Most Energetic Particles, Astronomers Turn on the Radio

Trouble viewing? View in your browser. View all Scientific American publications.

    

April 27, 2021

Physics Searching for the Universe's Most Energetic Particles, Astronomers Turn on the Radio New radio-based observatories could soon detect ultrahigh-energy neutrinos, opening a new window on extreme cosmic physics By Katrina Miller

Policy & Ethics Biden Has Reversed Trump's War on Science in His First 100 Days His administration has made great strides in repairing the damage—but there’s plenty left to do By Jacob Carter,Taryn MacKinney,Genna Reed,Gretchen Goldman,Anita Desikan,Casey Kalman,Andrew Rosenberg

EARTH Millions of Groundwater Wells Could Run Dry Overpumping, drought and climate change are lowering water tables worldwide By Chelsea Harvey,E&E News

Medicine Penicillin Wasn't Alexander Fleming's First Major Discovery It was lysozyme, an enzyme that attacks the cell walls of bacteria—and just as with the celebrated antibiotic, he found it through pure serendipity By Claudia Kalb

Biology Lovebirds Adore Our Inefficient Air-Conditioning The rosy-faced lovebirds that live in Phoenix appear to be free riding on our urban climate control. By Jason G. Goldman | 04:12

Public Health Nurses Are Also Scientists The pandemic has only reinforced what nursing professionals have known all along By Eileen Sullivan-Marx

Environment Unsnarling Traffic Jams Is the Newest Way to Lower Emissions Results of a novel study would also save drivers time and fuel By John Fialka,E&E News

Space Mars Helicopter Ingenuity Goes Long Distance in Third Flight The rotorcraft set performance records in its latest test, flying a total distance of 100 meters By Mike Wall,SPACE.com

Behavior & Society COVID Has Created a Perfect Storm for Fringe Science It’s always been with us, but in a time of pandemic, its practitioners have an amplified capacity to unleash serious harm By David Robert Grimes

Medicine Blood Clots and the Johnson & Johnson Vaccine: What We Know So Far Infectious disease physician-scientist Wilbur Chen discusses the rare cases of blood clots linked to the immunization By Jim Daley

Math The Art of Mathematics in Chalk A photography project reveals the allure of equations in mathematicians’ blackboard work By Clara Moskowitz

Computing Artificial Intelligence Develops an Ear for Birdsong Machine-learning algorithms can quickly process thousands of hours of natural soundscapes By Harini Barath

FROM THE STORE Stressed Out: Causes, Effects and Keeping Calm   Chronic stress makes people sick. The fight-or-flight response activates our bodies to face immediate threats, but that stress system must turn off to allow organs to recover. Constant anxiety keeps the system active, and in this eBook, we examine the effects of ongoing stress and trauma on both body and mind as well as ways to arm ourselves against adversity by managing stress and building resilience.

ADVERTISEMENT

FROM THE ARCHIVE Neutrinos on Ice: Astronomers' Long Hunt for Source of Extragalactic "Ghost Particles" Pays Off Along with gravitational waves, the find adds more options for “multimessenger” astronomy, which does not solely rely on light to gather data By Mark Bowen | July 2018

QUOTE OF THE DAY "The new physics that may come out this is not even something we can dream of." Peter Gorham, astrophysicist at the University of Hawaii at Māno

LATEST ISSUES

Questions?   Comments?

Download the Scientific American App

To view this email as a web page, go here. You received this email because you opted-in to receive email from Scientific American. To ensure delivery please add news@email.scientificamerican.com to your address book. Unsubscribe     Manage Email Preferences     Privacy Policy     Contact Us