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People in D.C. and other cities are starting to see periodical cicadas. The red-eyed flying insects known as Brood X emerge every 17 years.
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The riot appeared to be all chaos and anarchy. But as researchers gave the online video and photos closer scrutiny, they produced forensic evidence that has identified those involved.
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The emergence of COVID-19 started scientists on a yearlong crash course to learn how the coronavirus might travel through the air and how to stop it. They learned a lot, and quickly.
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People with COVID-19 can infect others even if they are more than 6 feet apart. In updated guidance, the CDC acknowledges airborne transmission can occur, especially in poorly ventilated spaces.
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With research projects on hold due to social distancing guidelines, many scientists are being forced to decide what to do with the creatures that they study.