The radio broadcaster took to the Question Time panel on Thursday, where she discussed claims about net-zero and a push for more fracking and nuclear energy production.
When asked why the UK is still toying with domestic fossil fuel extraction, despite the climate crisis, the controverial commentator insisted the net-zero targets had been randomly plucked.
A member of the audience shouted: "It's not about a date, it's about a reduction in global atmospheric carbon emissions to reduce the global temperature rise."
Hartley-Brewer smugly asked what that would achieve, to which the woman explained it would minimise emissions and stop the eco-system from collapsing.
She continued: "This is a global problem, and it's not about individual targets – it's about everyone working together to reduce atmospheric carbon to reduce the rise in temperatures, so we don't see an escalation in eco-system collapse around the world, increases in volatility of weather patterns, flooding, forest fires, refugee crises, people moving. Climate change is a huge disaster."
SNP Westminster leader Ian Blackford then jumped in and backed Hartley-Brewer further into a corner.
Blackford said: "We just had a ScotWind round in the last few weeks and we're greenlighting 11 gigawatts of new offshore wind capacity. We have 25% of [Europe's] wind capacity on the Scottish shores … we could increase over the next 25 years our green energy in Scotland about five-fold from where we currently are. By the way, we can also provide the baseload with tidal, which can reduce that need for nuclear which has been talked about.
"We can make sure that we can deliver safe and cheaply, the green energy we need."
Viewers turned to social media to praise the audience member and commend her for her response. Others slammed Hartley-Brewer's arrogance.
Well done #BBCQT audience member. It's a relief that we don\u2019t seem to be falling for these right wing #populist arguments this time. It's time to double down on our #netzero targets.https://twitter.com/ukiswitheu/status/1509651409515560968\u00a0\u2026
Well done to this young lady in the audience o continue to tell it as it is whilst that pompous woman pooh-poohs her @LukeeverittC @xryouthuk @GeorgeMonbiot @XRebellionUKhttps://twitter.com/ukiswitheu/status/1509651409515560968\u00a0\u2026
I love the self-important delusion of an individual who has a fantastically simplistic idea of a concept, smirking and shaking their head at the words of people who patently know what they\u2019re on about. Staggering arrogance. I\u2019m almost jealous!https://twitter.com/ukiswitheu/status/1509651409515560968\u00a0\u2026
— Marc Riley \u26bd\ufe0f\ud83c\udf7a\ud83d\udc33 (@Marc Riley \u26bd\ufe0f\ud83c\udf7a\ud83d\udc33)
No fooling, this is absolutely spot on #BBCQT - audience members cool as a cucumber.https://twitter.com/ukiswitheu/status/1509651409515560968\u00a0\u2026