Silicon is almost synonymous with computer chips. But as the semiconductor struggles at the minute scales of today's devices, chipmakers are being forced to consider other materials.

Richard Richards, a geneticist at CSIRO Plant Industry, is breeding wheat varieties that can tough out prolonged droughts--and keep people fed.

The Gonzo Scientist goes to the dogs--truffle-hunting dogs to be precise--to answer the question of whether gourmet food is really worth the price. Would you eat dog food if it were served like paté? You may not be so sure of your answer after this episode.