We’ve spoken about the issue of plastic waste in a few previous episodes, but the problem of litter extends much beyond that. There are many other materials and items that are used in an increasingly disposable manner and that contribute to this epidemic. Litterati is a mobile app, created by Jeff Kirchner. It started off simply as an Instagram hashtag, but it started to grow into a global movement. Jeff then realised he was collecting lots of useful data and perhaps this data could be leveraged to approach brands who were the main litter offenders. In the interview, Jeff will share some of the stories of how that is working in the real world and how the power of ‘big data’ can be used for good and not evil for a change. We also talk about how even though littering isn’t necessarily the biggest environmental issue of our time that the app can be used as a gateway into other issues and a way to engage people on a relateable issue. Download the app on iTunes or Android and have a go, it's actually really fun! 

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Currently, the equivalent of one garbage truck full of plastic enters the oceans every single minute of every day. So until we cut out this plastic habit completely, we need to find a way to put it to use and stop it harming wildlife and ecosystems. In this episode, we look to the circular economy model once more for a solution and I interview Toby McCartney, the founder of MacRebur, a Scottish based company that takes waste plastic that would otherwise be destined for landfill (or more likely the ocean) and use it to build roads. We chat about where the idea came from, the difficulty of getting from idea to product, the importance of local circular economy thinking and finally the plan to scale and tackle the plastic problem around the world.

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Land-based food production is in crisis - driven by climate change & population increase. We have to grow 70% more food by 2050 to accommodate 2 billion more people on the planet (World Bank 2017). So with the oceans covering over 70% of the earth's surface surely there must be opportunities for food production there? We know fishing with large nets hasn't worked, putting fish stocks under a lot of pressure. And fish aquaculture has many negative impacts too. But today's guest Bren Smith from non-profit GreenWave is pioneering a new technique known as 3D ocean farming which is a no input, ecosystem restoring, carbon-storing innovation that could provide sustainable, affordable food and millions of jobs in the process. For more info head to www.greenwave.org

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Fast fashion focuses on speed and low cost delivering new ‘collections’ of clothing for every season of every year inspired by the latest catwalk looks or celebrity styles. But this low-cost, disposable way of buying clothes is having an impact on the environment. This often includes growing the cotton (land use and chemicals), huge amounts of freshwater use, toxic chemicals in the manufacturing process and the impact of endless clothes filling landfills. Rapanui is a clothing company that has always had the environment at the center of their business, using renewable energy, organic cotton and recycling all the water they use. And their latest idea is a circular economy t-shirt which can be sent back over and over cutting down many of the environmental impacts of disposable fashion. In this interview I speak to one of the two brothers who founded the business Mark Drake-Knight about the company, this product and the exciting idea of Tee-Mill a platform they created which helps anyone set up a circular economy fashion brand.

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Biomimicry is the process of looking to nature for ideas and inspiration on how we can solve human problems and design things that better fit in with life on earth. Taking advantage of 3.8 million years of evolution to give us a ‘jump start’ on research and development. In this interview, I speak to Megan Shuknecht who is from the Biomimicry Institute, an organisation set up to promote the use of the principles of biomimicry in design and innovation. As Megan will explain, they do this by hosting design challenges, with a launchpad for new businesses and even an award-winning free tool (AskNature.org) which anyone can access to get inspiration from the natural world. For more information on The Biomimicry Institute head to: https://www.biomimicry.org And for AskNature: www.asknature.org

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With the issue of climate change seeming so vast with so many factors influencing our carbon emissions, many people have started to focus on what they can do as an individual. Because at least we have control over that. In this episode, I speak to Roger Tyers, an academic working on climate change at the University of Southampton (UK) who is leading by example by pledging to stop flying. But with research based in China, how do you get halfway around the world without leaving the ground? I ask how this journey was, how he planned it, what it was like and what it cost. We also spoke about the wider issue of flying, why it is so cheap? Finding fulfillment in flying less often and we also touch on his research as well. Follow Roger on Twitter: @RogerTyersUK and Instagram: doctorchoochoo 

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This episode focusses on the environmental problems caused by agriculture and I speak with the co-founder of a The Small Robot Company who aim to tackle many of those problems by approaching farming in a completely different way. We speak about the environmental problems caused by past and current intensive agricultural practices, how the small robots work and why that is positive for the environment, integration with internet of things technology, what to do with new spared land/ obsolete farm buildings and how they plan on stopping them getting stolen.

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Apparently electric flying cars will be appearing very soon, with some big names such as Uber and Boeing currently developing them. Some newspaper headlines have said they could solve our greenhouse gas and pollution woes….this seems like a bold claim that I think needs further investigation, so in this episode I speak to Akshat Kasliwal from the University of Michigan was part of a team that published a paper recently titled: Role of flying cars in sustainable mobility. In the interview, we discuss how they might fit into current and future transport systems and take a closer look at the potential environmental benefits

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This week we are talking about the blockchain. Could the technology behind Bitcoin help us tackle some of the worlds biggest environmental problems? In this interview I speak to Pete Howson a Lecturer in International Development and Nottingham Trent University who has published papers on this very subject. We speak about how the technology works, how that might be applied to environmental problems and the potential pros and cons. We also talk about the issues of setting up environmental markets and how we need to stop thinking with a traditional capitalist mindset if we are truly to get to the root of what is causes some of the issues. To follow Pete's work and for more info go to www.crytonature.org Or you can follow him on Twitter @peterjhowson

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