Magnetic spray could aid drug delivery and other news

BBC Click’s Jen Copestake looks at some of the best of the week’s technology news stories including:

  • Smartphone manufacturer Oppo reveals a concept rolling phone screen capable of transforming into a tablet

  • Elon Musk’s SpaceX sends four astronauts to the International Space Station (ISS), his personal fortune goes up by more than $15bn (£11.3bn) and he also tests positive for Covid-19

  • A magnetic spray which can aid targeted drug delivery by turning objects into mini robots is created by City University of Hong Kong

See more at Click's website and @BBCClick