The NSW government is buying back Petroleum Exploration Licenses (PEL). We talk to  Louise Steer from Stop CSG Sydney about what it took to make it this far and what's next in the fight to rid Australia from fracking.

Estimated millions of pieces of space debris are orbiting around the planet left over from space missions and satellites. Professor Steven Tingay, the director of the Curtin Institute of radio astronomy at Curtin University in Perth, talks to us about this problem and what his team of scientists in the Western Australian Desert were doing to track the debris.