Three of the founders of Builders Declare Australia sit down to discuss the challenges Australian builders are facing with Australia's (and the world's) timber shortage.

• Local shortages of timber Australia wide
• How the use of timber captures carbon in our homes
• The potential of 'green' steel
• Impacts of the timber shortage around the world
• How timber is replenished every 12seconds
• Hierarchy of timber
• Recycled timber
• Bamboo timber
• Jeremy's wood sculpting