Patrick Evans Ultra Tour

BBC Health

• 'I wanted a black belt at the age of 75'
  This group of high kicking, power-punching pensioners prove "it's never too late to learn".
• The ultrasound scan you can do yourself
  A US company has produced an ultrasound scanner that plugs into an iPhone and costs $2,000 (£1,555).
• Clean air: Do low emission schemes improve children’s lungs?
  Children in London and Luton are taking part in a study to measure how their lungs are affected by air pollution.