Main content
Blue John 'discovered after 68 years'
Mr Harrison explains how a seam of Blue John stone was found after 68 years of looking.
Duration:
This clip is from
More clips from 06/08/2013
![]()
Questions over salaries for top charity bosses
Duration: 05:06
![]()
Guinea Worm Disease is 'relatively contained'
Duration: 05:55
![]()
Britain's biggest "fatberg" took three weeks to clear
Duration: 03:19
![]()
Cyber bullying is 'everyone's responsibility'
Duration: 04:15
More clips from Today
![]()
Heart surgery success linked to time of day, says study
Duration: 03:03
![]()
Hello Smart Glasses, goodbye VR headsets?
Duration: 03:43
![]()
Today's Babies: Meet the families
Duration: 13:31
![]()
Today guest editors: Theresa May
Duration: 01:46:02
