Planets form in dusty discs whose upper layers are bathed in energetic radiation, either deriving from the central star or from massive stars in the local environment. Heating of surface layers can drive powerful winds which can limit the lifetime of discs and their planet forming potential. I will describe some highlights of recent research into disc photoevaporation, emphasising in particular the evidence for substantial photoevaporative losses from environmental heating even in rather sparse birth environments. I will also show how recent studies in OB associations demonstrate that proximity to neighouring OB stars has a significant impact on disc lifetimes and can be used to test theories of disc photoevaporation.