This is the Guardian. The race to become the next Tory leader and UK Prime Minister is in full flight.

She's the candidate to beat.

Liz Truss arriving for tonight's debate in Stoke-on-Trent

believe she's already won the battle for hearts and minds

among Tory members.

And while Liz Truss and Rishi Sunag have clashed on a number of issues during their televised debates,

the climate emergency has largely been absent.

Green campaigners have pointed out that the has largely been absent.

Green campaigners have pointed out that the next leader of the Tory party

will have to convince not just a small group of party members,

but also the electorate at large that they are the best candidate to tackle the climate

emergency, as public opinion is consistently over 60% in favour of climate action. However, neither of the remaining two candidates have a

particularly impressive track record on these issues. There's not much in that

suitcase is there? Where is the top of the tree.

So who is least bad when it comes to green policies?

And why has one of the world's most urgent issues taken a back seat in the leadership

contest?

I'm E. Sample, the Guardian Science Editor, and this is Science Weekly.

Fiona Harvey, you're the Guardian's Environment Correspondent and we're here to talk about the Tory leadership candidates.

Before we get to them, for all his faults, Boris Johnson was viewed by

many Green Tories as their best hope on environmental issues for a long while. He seemed to talk a lot about it, but did he actually do very much?

Well Boris Johnson did actually have a good reputation as a green Tory, and so he did tend to give green issues quite a good hearing.

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