Deutsche Welle’s Science Correspondent Derrick Williams answers viewer questions. He looks at how some people who have had COVID-19 have experienced memory loss.
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Researchers around the world are developing vaccines against SARS-CoV-2, the virus that causes COVID-19. Here's a look at their progress so far.
SARS-CoV-2 probably originated in bats, but how it passed to people has been the subject of intense speculation and is now being investigated by the World Health Organization.
The number was reached as officials consider tougher measures. Brazil's air force delivered oxygen supplies to the jungle state of Amazonas. Follow DW for the latest.
Curbing meat consumption is essential in the fight against climate change. But it is a more complicated story in countries that face spiraling food insecurity.
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