Jul 25 2019 20 mins 17
Chris Smith from the Naked Scientists takes on YOUR questions. Why do some dogs recognise themselves in the mirror, or recognise other dogs on TV, while others don't? Why is the sky blue? Why doesn't mitochondrial DNA recombine like other DNA, and does it run into problems with natural selection? How come you can get electric shocks from tracksuits? Why might planting trees help prevent climate change? Plus, Chris reflects on almost twelve years of questions on Radio 702...
