Australians are already feeling the effects of a warming planet on their health. Journalist Paddy Manning and 7am examine the impact of heat in the first of a three-part podcast series. DEA’s Kim Loo, a western Sydney GP, shares her experiences of dealing with this silent killer, including her unusual move to record heat as a contributing cause of death on the death certificate of one of her patients. Heat related deaths are usually recorded as a heart attack or stroke. This podcast makes for a sobering listen, but a vital one.