'People aren't taking care of this beautiful space'

"People aren't taking care of this beautiful space that we have access to, and it's making it just a bit more unpleasant to be in," says Martha. The 15-year-old is one of 8,400 young people from across Bradford who have been surveyed on their feelings about climate change and their local environment.

In the study, by research group Born in Bradford, young people called on the government and large corporations to act urgently on climate change - with nearly a third (32%) saying they felt negative about the environment's future.

"It really shocks me that people don't care about what their life is going to be like if this carries on the way it is," Martha says.

"Like, it's going to contribute to everyone's health problems and way of living."

Like many others who took part in the survery, the 15-year-old, from Shipley, said she was particularly concerned about environmental pollution in her local area.

"I live right next to a park and it's quite unfortunate that a lot of the time you see quite a lot of rubbish everywhere," she said.

"They have a good amount of bins in our park, but there's just people [who] go on picnics or have outings and they just leave all their rubbish everywhere."

Researchers said the results suggested Bradford could "become a model for how cities respond to environmental challenges" because of its young population and combination of academic research centres.

Tiffany Yang said the young people they spoke to were "motivated and engaged".

"When we asked our young people about climate change, local environment was really the first thing to come to mind for them. And that's where they had most of the concerns.

"Young people, they have their lived experience and they know what's happening around them.

"It's about tapping into that and ensuring we listen to their voices so we can co-produce questions that they might have and solutions and answers, and bring them into decision making."

The study also showed Bradford's young people were regularly exposed to pollution levels that exceed World Health Organisation (WHO) guidelines.

According to Born in Bradford the city has double the concentration of air pollutants than the WHO limit.

"Our young people are very aware of air pollution levels. More than a third had rated Bradford's air quality as poor or very poor," Yang said.

"They also noted air pollution was particularly bad during the school run due to the number of cars.

"They talk about air pollution as something that they can see and that they can smell. And they talked about the high levels of asthma in the city and how levels of air pollution just do not help," she added.

Martha said it was particularly noticeable when she was walking to and from school.

"For younger people, growing up in the area, growing up with more air pollution around you, it's just going to massively negatively affect your future life with, like, lung diseases and stuff," she says.

But this awareness does not necessarily lead to despair, says Yang.

"They want to focus on positives that could encourage people to want to support and protect nature," she says.

"We know young people in Bradford are really proud of their local area and they are experts in their own experiences. So it is important that we listen to them.

"We have a very young, diverse and vibrant population in Bradford. And if we genuinely involve them in planning transport, green spaces and healthy neighbourhoods, then Bradford could become a model for how cities respond to environmental challenges in a community-led way."

Listen to highlights from West Yorkshire on BBC Sounds, catch up with the latest episode of Look North.