Big radioactive explosion in Russia by Ian Woolf, Kate Brandis talk how wetland bird feathers tell tales, Gina Sartore's The Daughter of Time about Grace Hopper, Produced and hosted by Ian Woolf Support Diffusion by making a contribution bitcoin: 1AEnJC8r9apyXb2N31P1ScYJZUhqkYWdU2 ether: 0x45d2cd591ff7865af248a09dc908aec261168395