Solar energy breakthrough and other news

BBC Click's Kitty Knowles looks at some of the week's best technology stories including:

  • Iran enforces a near-total internet blackout following protests against rising petrol prices leaving almost 80 million people without online access

  • LG tests 25 of its Cloi robots at Seoul’s National University Hospital as part of a three month trial. The bots will provide video support to young patients

  • Heliogen, a Bill Gates backed startup, claims a breakthrough in its solar energy technology which uses computer vision to position a field of mirrors to concentrate energy at temperatures of over 1,000C (1,832F)

See more at Click's website and @BBCClick