EU is central to tackling climate change, says Ed Miliband

Former Labour leader joins environment secretary Liz Truss and Green MP Caroline Lucas in supporting remain campaign

Ed Miliband has joined a cross-party attempt to persuade voters that leaving the EU would damage the environment.

The former Labour leader has signed a joint declaration with environment secretary Liz Truss, former energy secretary Ed Davey and Green Party MP Caroline Lucas in what pro-EU campaigners called an unprecedented partnership.