The Covid-19 puzzles that scientists are still trying to answer

To Beat Covid-19, Scientists Try to 'See' the Invisible Enemy  WIRED

Scientists ask: could summer heat help beat Covid-19?  The Guardian

Scientists pinpoint how far coronavirus COVID-19 can travel in the air  TweakTown

Bangladesh scientists create $3 kit. Can it help detect COVID-19?  Al Jazeera English

A Person Can Carry And Transmit COVID-19 Without Showing Symptoms, Scientists Confirm  ScienceAlert

Herders' disappearance puzzles region
Daily News
IT is now more than six weeks since the two cattle grazing brothers went missing from the wilderness of Meatu district, in Simiyu region, but there is still no clue about their whereabouts despite frantic search efforts that have so far covered Karatu ...

Stardust or star bust? Betelgeuse's dimming light puzzles astronomers  RFIA dying star 1,000 times bigger than the sun could soon explode  EuronewsThe Further Adventures of Betelgeuse, the Fainting Star  The New York TimesLight Sails and Supernovae Can Help Us Reach the Speed of Light  Interesting EngineeringBetelgeuse is Dimming and Changing Shape, New Image of Its Surface Reveals  Discover MagazineView Full coverage on Google News

With only three official cases, Africa's low coronavirus rate puzzles health experts  FRANCE 24 EnglishView Full coverage on Google News

Stardust or star bust? Betelgeuse's dimming light puzzles astronomers - The Jakarta Post  Jakarta PostBetelgeuse: VLT Observes Dimming Supergiant Star | Astronomy  Sci-News.comNobody knows what’s going on with the colossal nearby star Betelgeuse  BGRBetelgeuse Is Still Dimming! And We Have the Pictures to Prove It  Universe TodayBetelgeuse: Star is dimming and appears to be changing shape, new images show  The IndependentView Full coverage on Google...