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Liv Boeree
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Chris Hadfield
Retired Canadian Astronaut & Author
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Signs of Covid-19 may be hidden in speech signals

Studying voice recordings of infected but asymptomatic people reveals potential indicators of Covid-19.

Ezra Acayan/Getty Images
It's often easy to tell when colleagues are struggling with a cold — they sound sick.
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How often do vaccine trials hit paydirt?

Vaccines find more success in development than any other kind of drug, but have been relatively neglected in recent decades.

Pedro Vilela/Getty Images

Vaccines are more likely to get through clinical trials than any other type of drug — but have been given relatively little pharmaceutical industry support during the last two decades, according to a new study by MIT scholars.

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As belly size gets larger, the memory center in the brain gets smaller

Researchers at University College London link waist circumference with dementia.

Photos: Robyn Beck, Ronaldo Schemidt, Paul Ellis/AFP via Getty Images
  • Researchers at University College London have discovered a link between waist circumference and dementia.
  • Seventy-four percent of volunteers that developed dementia were overweight or obese.
  • Women with central obesity had a 39 percent greater risk of dementia.
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What is an immunity passport and could it work?

In Chile, the so-called "release certificate" would free holders from all types of quarantine or restriction.

TOLGA AKMEN/AFP via Getty Images

Weeks into lockdown and with economic indicators signalling a deep global recession, governments around the world are searching for ways to get their countries back up and running.

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Here’s what traveling could be like after COVID-19

We will travel again, but it will not be the same.

Thomas Lohnes/Getty Images

COVID-19 has upended global travel and brought the world to a standstill.

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