"National security is threatened by dependency on fossil fuels. Sticking with fossil fuels through to 2050 costs double what transitioning off them would." Green Party Deputy Leader, Rachel Millward, takes on Reform's climate denial at the Oxford Union .

@OxfordUnion You have just argued eloquently the case for the UK to open up more fields for oil & gas in the North Sea, while the world generally transitions to using less fossil fuel. We will still need fossil fuels well beyond 2050 as it is used for many other applications beyond energy.

@OxfordUnion Blocking our own fossil fuel extraction increases dependency on imports from dictatorships and unstable foreign countries, via increasingly unreliable trade routes.

@OxfordUnion Future leader of the greens is what im thinking.

@OxfordUnion ...costs double...no, you are missing the point. We face a collapse of the global economy and food security followed by extinction all well before 2050.

@OxfordUnion The public need to be grid independent.

@OxfordUnion Always strange how people refer to themselves in the third-person.