In these series of interviews, David Ashworth discusses his work and the development and application of the Emerald Heart Light.  Interviewed by Iain Balmain.

Interview 1 pt.1
[youtube http://www.youtube.com/watch?v=fM40UgwQG6M&w=560&h=315]

Interview 1 pt.2
[youtube http://www.youtube.com/watch?v=77CB4k8n72U&w=560&h=315]

Interview 1 pt.3
[youtube http://www.youtube.com/watch?v=l3vmMcj0lWc&w=560&h=315]

Vision
[youtube http://www.youtube.com/watch?v=Q-J_22ClNB8&w=420&h=315]

Interview 3 pt.1
[youtube http://www.youtube.com/watch?v=eG15ytGCNgI&w=560&h=315]
Interview 3 pt.2
[youtube http://www.youtube.com/watch?v=bvLs4wTUVPc&w=560&h=315]
Interview 3 pt.3
[youtube http://www.youtube.com/watch?v=usmxYhawn28&w=560&h=315]
Interview 3 pt.4
[youtube http://www.youtube.com/watch?v=Okw5tY3h6EM&w=560&h=315]
Interview 3 pt.5
[youtube http://www.youtube.com/watch?v=a3TjiZ_0INM&w=560&h=315]