Counting the Earth

Counting the Earth

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Counting the Earth episodes

  • 22: From peat to paddies: 12
    This episode explores the challenge of protecting the UK’s lowland peatlands while sustaining food production. Visiting a trials site at Oxwillow Farm in the Cambridgeshire Fens, hosts Sue Nelson and Alice Hope uncover pioneering UKCEH research into paludiculture, or wetland farming, where higher water tables help preserve peat while supporting alternative crops.
    Speaking with UKCEH scientists Professor Richard Pywell, Dr Nadine Mitschunas and Dr Terhi Riutta, they visit experimental plots growing crops ranging from salads and cucumbers to miscanthus for bioenergy, reedmace for biofibres and even cold-hardy rice. Site owners, farmers Craig and Sarah Taylor, whose family have farmed in the Fens for over 500 years, discuss the opportunities and challenges of farming on rewetted peat in a changing climate.

    With early trials showing potential to reduce carbon emissions, boost biodiversity and maintain productive agriculture, the episode explores how innovation could help balance food production, climate resilience and nature recovery across the Fens.

    Hosts: Sue Nelson and Alice Hope

    Producer: Rachael Buchanan

    Counting the Earth is a Boffin Media Production for the UK Centre for Ecology & Hydrology.

    Find out more:
    Rice takes root in British soil for the first time
    The research is part of the AgZero+ project, which is jointly funded by the Natural Environment Research Council (NERC) and the Biotechnology and Biological Sciences Research Council (BBSRC). 

    ​Related episodes
    Nature for Net Zero:0
    Top of the Crops: 2080

    36 min
  • 21: The invisible pollutant: 200 million

    Most nitrogen is a harmless gas that makes up 78% of the air we breathe.  Reactive forms of nitrogen are more of a challenge, such as those found in fertilisers essential to help our crops grow. When excess nitrogen escapes into the environment, it can become a major pollutant, damaging ecosystems, air quality and human health. 

    In this episode, Alice and Sue visit Whim Bog, a peatland research site 20 km south of Edinburgh that is globally unique and managed by UKCEH. There, site manager Dr Matt Jones explains how 25 years of research have revealed the impacts of nitrogen pollution on the environment. 

    Nearby at the woodland experiment site, Glencorse, Dr Ajinkya Deshpande discusses research on the effects of ammonia throughout the woodland canopy, including mosses and lichens. They also hear about a sister project in Sri Lanka investigating how tropical species respond to nitrogen pollution. 

    UKCEH environmental physicist Professor Mark Sutton highlights the global significance of the issue, explaining how changes to agricultural practices can reduce nitrogen losses to the environment while conserving resources and reducing pollution. He also outlines solutions that could help deliver a future where pollution mitigation and food security go hand in hand. 

    Hosts: Sue Nelson and Alice Hope

    Producer: Rachael Buchanan

    Counting the Earth is a Boffin Media Production for the UK Centre for Ecology & Hydrology.

    Find out more:   

    LicheN app
    Download via Google Play
    Download via the Apple Store 

    UNEP facts about nitrogen pollution 


    44 min
  • 20: Back garden biodiversity: 9,600

    Recorded at the RHS Chelsea Flower Show, Alice and Sue explore the vital role our gardens play in supporting wildlife and how we can help shape these thriving mini ecosystems. At the UKCEH Nature Decoded exhibit, they meet UKCEH data scientist Alyssa Duffy, who introduces the innovative biodiversity‑monitoring technologies on display — from soil and freshwater acoustic sensors to the LepiSense, affectionately known as the “moth photo booth”.

    They also speak with UKCEH ecologist Dr Michael Pocock about how anyone can contribute to science by recording the wildlife in their gardens using apps like iRecord, and the wellbeing benefits that come from taking part. The Big British Garden Survey, a collaboration between UKCEH and the National Garden Scheme, offers another way for people to help build a richer picture of the wildlife around us. Dr Richard Claxton, Chief Executive of the National Garden Scheme, shares more about this survey and the importance of taking part.

    Hosts: Sue Nelson and Alice Hope

    Producer: Rachael Buchanan

    Counting the Earth is a Boffin Media Production for the UK Centre for Ecology & Hydrology.

    Find out more:  

    UKCEH Nature Decoded at RHS Chelsea Flower Show
    featuring soundscapes of worms, ants, beetles and more!

    iRecord, UK Pollinator Monitoring Scheme and other citizen science apps.

    Big British Garden Survey

    Wellbeing benefits of participating in citizen science

    30 min
  • 19: Unpacking Oil Palm: 80 million

    From chocolate and shampoo to food, palm oil can be found in a range of packaged goods on the supermarket shelves and is used throughout industry. Its versatility makes it difficult to replace yet its production remains controversial due to high greenhouse gas emissions, the extensive deforestation carried out in Southeast Asia in the 1990s to make way for oil palm plantations, and habitat loss for a range of endangered species.  So how can the oil palm industry become more sustainable? In this episode Alice Hope and Sue Nelson visit the Royal Botanic Gardens, Kew to meet palm house manager Will Spoelstra, who offers insight into the plant.  
      
    UKCEH scientists Dr Julia Drewer and Professor Niall McNamara share insights from their research in Malaysia to improve soil quality and reduce greenhouse gas emissions. Plus Sue and Alice hear from the Malaysian partners in that research – Dr Reza Azmi from the Social Enterprise Wild Asia - about how this trial is helping small-scale producers adopt more sustainable practices to support livelihoods and the environment. Finally the conversation shifts to Africa, where the oil palm originated from, as Dr Nick Cowan explains how lessons learned in Asia are being applied to new regions.

    Hosts: Sue Nelson and Alice Hope

    Producer: Rachael Buchanan

    Counting the Earth is a Boffin Media Production for the UK Centre for Ecology & Hydrology.

    Find out more:

    Building a sustainable future for oil palm in West Africa  
     
    Wild Asia  


    Innovations in Practice : The Pathway to Nature-Positive, Low-Carbon Palm Oil


    Roundtable for Sustainable Palm Oil 
    WWF Palm Oil Buyers Scorecard  
    48 min
  • 18: Whiplash weather: 90

    Let’s talk drought. Yes, that’s right, drought! Our weather is experiencing extremes - from flooding to drought - so Alice and Sue delve into this whiplash weather with UKCEH senior hydrologist Lucy Barker. With the latest Hydrological Summary showing that January has been much wetter than average, they explore whether that is enough to replenish water reserves following the extended drought in 2025.

    Alice and Sue also catch up with UKCEH micro-meteorologist Dr Jon Evans at a COSMOS-UK field site at Chimney Meadows Nature Reserve in Oxfordshire, one of 39 sites which make up a national soil moisture monitoring network that’s literally out of this world. Soil moisture is just one measure alongside rainfall, river flows, groundwater data that UKCEH gathers in partnership with others to produce monthly hydrological summaries – an essential tool for environmental regulators, government agencies, water companies, researchers and farmers. 

    Hosts: Sue Nelson and Alice Hope

    Producer: Rachael Buchanan

    Counting the Earth is a Boffin Media Production for the UK Centre for Ecology & Hydrology.

    Find out more:  
    Hydrological Summary
    UK Water Resources Portal brings together all the data from the Hydrological Summaries – including COSMOS-UK – in near real time. 
    COSMOS UK
    Floods and Droughts Research Infrastructure (FDRI)
    Water UK’s Waters Worth Saving page. 

    39 min
  • 17: The Burning Issue: 3.7 million
    Wildfires are evolving. Around the world they are becoming bigger, burning hotter, and harder to control with devastating impacts on humans, the economy and the environment. In this episode, Alice and Sue talk to UKCEH wildfire scientist Dr Douglas Kelley who outlines the causes of this change, drawing on examples from California and the Pantanal, the worlds’ largest tropical wetland.  
    Closer to home, it has been a record year for wildfires in the UK. Alice catches up with Station Commander and Wildfire Tactical Adviser Andy Elliott from Dorset and Wiltshire Fire and Rescue Service. They visit Holt Heath National Nature Reserve in Dorset, the site of a fierce large scale blaze in August. Andy reveals that, due to the fire’s intensity, the lowland heath landscape may take up to 30 years to recover. 
     
    Hosts: Sue Nelson and Alice Hope

    Producer: Rachael Buchanan

    Counting the Earth is a Boffin Media Production for the UK Centre for Ecology & Hydrology.

    Find out more:
     
    UKCEH press release on the State of Wildfires report.

    The State of Wildfires project, including the latest report.  The State of Wildfires project is co-led by the UK Centre for Ecology & Hydrology, University of East Anglia, the Met Office and the European Centre for Medium-Range Weather Forecasts.

    The National Fire Chiefs Council Wildfire Aware campaign.
    39 min
  • 16: Encounters of the Invasive Kind: 2,104
    What do raccoons, purple pitcher plants, signal crayfish and the yellow-legged hornet all have in common? No, this is not a joke - far from it. They are all on the GB invasive non-native species alert list. The introduction of invasive non-native species is one of the top causes of biodiversity loss worldwide. In this episode Sue and Alice meet up with UKCEH ecologist Professor Helen Roy to delve into the challenges posed by invasive non-native species and explore their environmental, economic, and social impacts.
    They also catch up with Dr Olaf Booy, Technical Coordinator for the GB Non-native Species Secretariat, part of the Animal and Plant Health Agency, to find out about the work that goes on to identify, detect, monitor and eradicate invasive non-native species. Olaf also spoke about how events such Invasive Species Week (12-18 May) help to raise awareness of the issue and what you can do to help and get involved.

    Hosts: Sue Nelson and Alice Hope

    Producer: Rachael Buchanan

    Counting the Earth is a Boffin Media Production for the UK Centre for Ecology & Hydrology.

    Find out more:
    Invasive Species Week – 12-18 May 2025
    Non-native Species Secretariat
    ID sheets for Invasive Non-native Species
    Check, Clean, Dry
    Be Plant Wise
    Record a sighting of an invasive non-native species, especially an alert species
    40 min
  • 15: Resistance Rising: 1.14 million
    In this episode, Alice and Sue visit the River Kennet and the Reading Sewage Treatment Works to explore antimicrobial resistance (AMR), a growing global issue. In 2021 1.14 million deaths were attributed to antimicrobial resistant bacterial infections, according to the UN Environment Programme. AMR occurs when bacteria, viruses, fungi, and parasites become resistant to the medicines that are meant to kill or treat them. Microorganisms from our waste, along with chemicals from our homes (like medications, cleaning products, and antifungal shampoos), contribute to this problem when entering our watercourses, along with agricultural and urban runoff. 
    Alice and Sue meet with Dr Holly Tipper and Dr Isobel Stanton, molecular microbiologists at UKCEH, to learn more about their research on AMR, what we know and where the knowledge gaps are and role of the environment in the development of AMR in microbes. Then, they put on boots, hats, Hi-Viz jackets, and goggles to see for themselves the wastewater journey through the treatment works with Dan Freeman, lead for Thames Water’s Chemical Investigation Programme, providing insight into monitoring of emerging contaminants.  

    Hosts: Sue Nelson and Alice Hope 

    Producer: Rachael Buchanan

    Counting the Earth is a Boffin Media Production for the UK Centre for Ecology & Hydrology. 

    Find out more about AMR research at UKCEH
    https://www.ceh.ac.uk/news-and-media/blogs/our-research-will-inform-action-tackle-amr-environment-and-risk-human-health

    The Naked Scientist podcast on AMR, featuring Dr Andrew Singer from UKCEH
    https://www.thenakedscientists.com/podcasts/naked-scientists-podcast/amr-unleashed-silent-pandemic

    35 min
  • 14: Top of the crops: 2080
    In this episode, Alice and Sue time travel to the year 2080, to explore what crops we might be growing in the UK, after 50 years of a changing climate. They speak with UKCEH Spatial Ecologist Dr John Redhead about horizon- scanning research on how climate change could shape the suitability of crops in the UK and the challenges this brings for UK farming systems.
    Alice also speaks with Josiah Meldrum from the UK-based wholefoods supplier Hodmedods to explore the benefits of beans and uncover how crops like chickpeas and lentils are already being cultivated in the UK. They also discuss ongoing trials of other crops, which are setting the stage for a more diverse and sustainable agricultural future.
    Read more about the research in our media release
    https://www.ceh.ac.uk/press/scientists-predict-what-will-be-top-crops-2080-due-climate-change


    and the paper in Environmental Resilience and Sustainability
    https://doi.org/10.1002/cli2.70007


    36 min
  • 13: Slow the flow: 5.7 million
    In England alone, an estimated 5.7 million properties are at risk of flooding from rivers, the sea, surface water and groundwater.
     
    In this episode and in the wake of Storm Bert, Alice and Sue visit the Bruern Estate in Oxfordshire to explore how Natural Flood Management measures are reducing flood risks downstream in Milton-under-Wychwood. UKCEH senior hydrologist Dr Alejandro Dussaillant explains how a holistic nature-based approach can work alongside more traditional flood management techniques to help address the challenges presented by the climate crisis and changes in land use.

    Alice and Sue also speak with Ann Berkeley from Wild Oxfordshire, to learn how features such as leaky woody dams, swales, wet woodlands and field corner bunds are helping to manage water flow through the catchment, bringing co-benefits along the way. UKCEH hydrologists Neeraj Sah and Ponnambalam Rameshwaran share insights from the ongoing monitoring activity to evaluate the longer-term effectiveness, co-benefits and any trade-offs to consider of these innovative approaches.

    For more information about the work done at the Bruern Estate and across the Evenlode Catchment please see the website for that project



    Hosts: Sue Nelson and Alice Hope 

    Producer: Rachael Buchanan

    Counting the Earth is a Boffin Media Production for the UK Centre for Ecology & Hydrology. 
    31 min

About Counting the Earth

From the publisher's feed

Sue Nelson and Alice Hope explore the numbers behind nature and pick apart the jargon and misinformation surrounding climate, the environment and biodiversity. Each month, they start with a number and investigate what it really means. From net zero to hedgerows, worms to water, Sue and Alice aren’t afraid to get their feet muddy in the quest for facts.