Pill to help immune system defeat all cancers, and mechanical 3D printer without electricity by Ian Woolf, Paul Sztajer talks about his game of sub-atomic physics - Particulars, Tim Nelson talks about the Delta-V Space Start-up accelerator, and Christie McMonigal talks about how to become a science communicator. Produced and presented by Ian Woolf Support Diffusion by downloading a free audio book from http://www.audibletrial.com/science