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Sevonna Brown of Black Women’s Blueprint, a mutual aid group, with her son in Brooklyn, New York. Mutual aid groups have been formed across New York City to address the economic plight caused by COVID-19. Stephanie Keith via Getty Images

Racism at the county level associated with increased COVID-19 cases and deaths

Blacks are at greater risk of dying from COVID-19 than whites. A study that examined racism at the country level had surprising results.
A variety of clues can tip off archaeologists about a promising spot for excavation. Gabriel Wrobel

How do archaeologists know where to dig?

Archaeologists used to dig primarily at sites that were easy to find thanks to obvious visual clues. But technology – and listening to local people – plays a much bigger role now.
Designed by psychologists, the free and anonymous web-based app can help you remember who you came in contact with. Ani Ka via Getty Images

This DIY contact tracing app helps people exposed to COVID-19 remember who they met

With new US COVID-19 cases topping 200,000 a day, contact tracers are overwhelmed. Here’s how infected people can start tracing and notifying contacts themselves.
An activist is arrested after his van was stopped by Kenosha police Aug. 27, days after police shot a Kenosha man, Jacob Blake, seven times in the back, leaving him paralyzed. Scott Olson/Getty Images

Wisconsin’s not so white anymore – and in some rapidly diversifying cities like Kenosha there’s fear and unrest

New research on Wisconsin’s changing demographics suggests that racial integration and political polarization were a combustible combination in Kenosha, where violence erupted in August.
Tony Potts, a 69-year-old retiree, removes his face mask for a temperature check just before receiving his first injection in a phase 3 COVID-19 vaccine clinical trial sponsored by Moderna. Potts is one of 30,000 participants in the Moderna trial. Paul Hennessy/NurPhoto via Getty ImageS

What are emergency use authorizations, and do they guarantee that a vaccine or drug is safe?

The vaccines that will first be used to prevent the spread of COVID-19 will have gone through a special approval process with the FDA. but just what is this expedited process?
Hundreds of beetle species seem to be specialists that feed only from small white flowers on trees. Susan Kirmse

Tiny treetop flowers foster incredible beetle biodiversity

In the Amazon, beetles and flowering trees have developed a tight bond. Hundreds of beetle species thrive off of and pollinate blossoms, helping to maintain some of the highest biodiversity on Earth.
Some places, like Nazaré Canyon in Portugal, produce freakishly huge waves. AP Photo/Armando Franca

What makes the world’s biggest surfable waves?

Some beaches in the world tend to consistently produce huge waves. Places like Nazaré Canyon in Portugal and Mavericks in California are famous for their waves because of the shape of the seafloor.