Dorothy Vaughan Mary Jackson Katherine Johnson

BBC Health

• Sir Chris Hoy and his wife reveal tiny nappies for premature babies
  Sir Chris and Lady Sarra Hoy's son, Callum, was born 11 weeks early, in 2014.
• Teen Instagrammers open up on mental health chat
  Harry and Samuel post videos with advice and tips for sufferers in the hope others will open up.
• General election 2019: NHS policy check - what to look out for in party manifestos
  If you care about what the parties are promising on the NHS, here are some key issues to watch for.