Our Changing World for Thursday 18 April 2019

9:06 PM.A new method of finding DNA in fingerprints could take some of the guesswork out of crime scene analysis. Read more Audio

8:00 AM.A second, the basic unit of time, is defined by caesium, which is also useful for dating things. Find out more about caesium's role as a timekeeper, in ep 15 of Elemental with Allan Blackman from AUT.

8:00 AM.Calcium creates objects that are strong and beautiful, from caves, to teeth and bones, and coral reefs. Find out more in ep 16 of Elemental, with Allan Blackman from AUT. Read more Audio

12:00 PM.With 75 living chicks and the final three eggs due to hatch this week, the 2019 kākāpō breeding season is set to be the longest on record. All this & the sex ratio of the first 49 chicks, in ep 16 of… Read more Audio