Our Changing World for Thursday 17 February 2011

9:55 PM.Each summer Adelie penguins in the Ross Sea are counted using aerial photography as part of a long-term study Read more Audio

9:46 PM.Using very low frequency radio waves to measure solar energy, and also detect global lightning Read more Audio

9:34 PM.Overnight sleep studies to detect sleep apnoea, and the use of CPAP machines to solve the problem Read more Audio

9:20 PM.How and why multi-cellular organisms evolved from single cells is an evolutionary puzzle Read more Audio

9:06 PM.Discovering sleep apnoea during an overnight sleep study was a life-changing discovery for Maui Stuart Read more Audio