How the Delta Variant Spreads So Quickly

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July 23, 2021

Public Health How the Delta Variant Spreads So Quickly Viral load is roughly 1,000 times higher in people infected with the Delta variant than those infected with the original coronavirus strain, according to a study in China By Sara Reardon,Nature magazine

Climate 'Advanced' Nuclear Reactors? Don't Hold Your Breath With little hard evidence, their developers maintain they'll be cheaper, safer and more secure than existing power plants By Elliott Negin

Engineering Soft Robot Hand Is First to Be Fully 3-D-Printed in a Single Step Then it played Super Mario Bros. By Sophie Bushwick

Climate Heat Wave Death Toll Will Rise With Thorough Count The 117 fatalities recorded in the Pacific Northwest so far include only those directly attributed to heat By Thomas Frank,E&E News

Space InSight Lander Makes Best-Yet Maps of Martian Depths The NASA mission used seismic waves from marsquakes to perform a core-to-crust survey of the planet's subsurface By Jonathan O'Callaghan

Policy & Ethics Weed Shouldn't Be Banned for Elite Athletes, Some Experts Say The disqualification of a leading U.S. Olympics candidate has brought the World Anti-Doping Agency's marijuana prohibition under fire By Diana Kwon

Public Health Wildfire Smoke Drives People Indoors, Raising COVID Risk The particulates in smoke also cause lung inflammation that may make people more susceptible to the virus By Aaron Bolton,Kaiser Health News

Public Health Why Extreme Heat Is So Deadly Heat waves kill more people than any other type of severe weather in the U.S. And climate change is making them more frequent and unpredictable By Tanya Lewis

Space Massive Machines Are Bringing Giant Exoplanets Down to Earth Scientists are using football-field-sized lasers, warehouse-sized electromagnets and other immense facilities to reveal the deep secrets of planetary interiors By Adam Frank

Mental Health At Least Two Million Children Have Lost a Parent or Grandparent Caregiver to COVID That's at a minimum. The real number could be significantly higher By Juliette Unwin,Seth Flaxman

Space Hardy Microbes Hint at Possibilities for Extraterrestrial Life Studies of extreme ecosystems on Earth can guide the search for Martian life and may reveal the fundamental limits of biology By Brianne Palmer

Evolution These Dinosaurs Had a Complicated Air Conditioner in Their Skull Cooling 5,000-pound, armor-plated giants was no small feat. By Aaron Martin

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FROM THE ARCHIVE How Dangerous Is the Delta Variant, and Will It Cause a COVID Surge in the U.S.? A new, more transmissible form of SARS-CoV-2 is rapidly spreading in the country and poses a threat to unvaccinated and partially vaccinated people By Tanya Lewis | June 2021

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