Genomes Reveal Humanity's Journey into the Americas

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April 20, 2021

Evolution Genomes Reveal Humanity's Journey into the Americas DNA has upended neat and tidy accounts of the peopling of the American continents By Jennifer Raff

Public Health What's Causing Michigan's COVID Surge, and Who's Getting Sick? An anesthesiologist at the University of Michigan describes the new influx of patients and what this may mean for the pandemic’s trajectory By Tanya Lewis

Chemistry Volcanic Ash Threatens Pompeii's Buried Murals Tests on excavated paintings revealed corrosive salts coming from surrounding volcanic material By Lakshmi Supriya

Climate Kamala Harris Lays Out Economic Priorities, Skips Climate Change Climate remains in the background during talks about the Biden administration’s infrastructure plan By Adam Aton,E&E News

Biology Beehives Are Held Together by Their Mutual Gut Microbes New research shows that members of a bee colony all have the same gut microbiome, which controls their smell—and thus their ability to separate family from foe. By Shahla Farzan | 02:40

Computing Will Quantum Computing Ever Live Up to Its Hype? One expert warns that the field is overpromising, while another says his firm is on the verge of building “useful” machines By John Horgan

Physics Quantum Astronomy Could Create Telescopes Hundreds of Kilometers Wide Astronomers hope to use innovations from the subatomic world to construct breathtakingly large arrays of optical observatories By Anil Ananthaswamy

Climate Therapists Are Reckoning with Eco-anxiety With no training, counselors feel unequipped to handle the growing number of people anxious about the climate emergency By Isobel Whitcomb,Gizmodo

Space See Ingenuity Team's Joy after the First Mars Helicopter Soars Scientists and engineers react with elation to the historic interplanetary flight By Lee Billings

Public Health The Race to Curb the Spread of COVID Vaccine Disinformation Researchers are applying strategies honed during the 2020 US presidential election to track anti-vax propaganda By Jeff Tollefson,Nature magazine

Environment What's Really in Your Water? Rapid at-home tests for contaminants are on the way By Sera Young,Julius Lucks

FROM THE STORE Scientific American Health & Medicine, Volume 3, Issue 2

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FROM THE ARCHIVE Controversial Fossil Hints Homo sapiens Blazed a Trail Out of Africa Earlier Than Thought The jaw fragment suggests our species began traveling abroad 50,000 years earlier than previously thought  By Kate Wong | January 2018

QUOTE OF THE DAY "All genomic studies rule out the possibility that the First Peoples mixed with Europeans or Africans or any other populations before 1492." Jennifer Raff, anthropological geneticist at the University of Kansas

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