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Crowds gather at dusk in Austin, Texas, to watch some 1.5 million Mexican free-tailed bats emerge to feed from their roost under the Congress Avenue Bridge. Jeff Haynes/AFP via Getty Images

Artificial intelligence can help highway departments find bats roosting under bridges

Bats roost under bridges and culverts across North America, so highway departments have to check for them before repairing bridges. A new AI tool makes those inspections faster and more accurate.
An entovegan might happily eat an insect burger like this one, believing that their diet is both sustainable and ethical. Karen Bleier/AFP via Getty Images

More people are eating bugs – but is it ethical to farm insects for food?

Insect farming is growing in popularity as an alternative to traditional livestock and feed production. A scholar evaluates what that means in terms of trillions of insect lives.
Emergency medical technicians aid a COVID-19 patient at his home in Louisville, Kentucky. Like much of the U.S., Louisville is experiencing an uptick in COVID-19 patients requiring emergency transport to medical facilities. John Cherry/Getty Images

New treatments for COVID-19 may stave off the worst effects of the virus

Medications to treat COVID-19 are in no way a substitute for the vaccine. But under the right circumstances, some show great promise for helping patients.
People wait in line to receive a vaccine shot against COVID-19 in Belgrade, Serbia, Aug. 17, 2021. Serbia and other countries have started administering booster doses. Meanwhile, more than half the world’s population has not had a first dose. AP Photo/Darko Vojinovic

Are COVID-19 boosters ethical, with half the world waiting for a first shot? A bioethicist weighs in

Scientists debate the medical benefits of booster shots. But there’s another aspect to consider: bioethics.
U.S. Rep. Alexandria Ocasio-Cortez making a fashion statement. Ray Tamarra/GC Images via Getty Images

‘Tax the rich’? Democrats’ plans to make the wealthy pay a little more will barely dent America’s long slide from progressive taxation

In 1950, the top 0.01% of earners paid almost 70% of their income in taxes. By 2018, the super-rich paid proportionately less than the average for all other Americans.
Astronomers have found a way to estimate the number of stars in the universe. Comstock Images via Getty Images

How many stars are there in space?

Scientists have a good estimate on the staggering number of stars in the universe.

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