This month, Horizon explores the global challenge of biodiversity loss. Many experts believe we are in the midst of a sixth mass extinction, where human-caused factors such as land use and pollution are causing a decline in biodiversity – something that threatens the future of our own species. We speak to British ecologist Professor Georgina Mace about how bad the situation is and what we can do about it. We explore marine ecosystems, where species relocation outpaces that of terrestrial populations, and examine how we can help these environments adapt, as well as finding out what’s in store for bees – our pollinators. Finally, we investigate the services nature provides for people – from cleaning our water to acting as a carbon sink – and ask whether putting a value on natural capital could help save it.
Activities such as laying gas pipelines, trawling for fish, drilling for oil, and even burying internet cables in the deep sea, are destroying marine ecosystems. But studies have shown that reintroducing seaweed and corals to these habitats could ward off the worst effects – and recover marine life.
Nature provides people with everything from food and water to timber, textiles, medicinal resources and pollination of crops. Now, a new approach aims to measure exactly what a specific ecosystem supplies in order to incentivise decision-makers and businesses to help combat biodiversity loss.
Ecosystems that contain only a few bee species underperform in terms of plant production whereas those with many different species thrive, according to research which highlights the importance of bee diversity to securing the world’s food supply.
Alarming declines in the number of insects, vertebrates and plant species around the world have raised fears that we are in the midst of a sixth major extinction that could cause a collapse of the natural ecosystems we rely upon to survive.
In November, Horizon takes a deep dive into the captivating, diverse world of clouds to understand what they mean for climate change. We speak to atmospheric physicist Prof. Pier Siebesma about why clouds are still one of the biggest sources of uncertainty when it comes to climate change and how new field studies are helping to reduce some of the unknowns. We speak to a researcher about flying through tropical clouds to collect particles at high altitudes to paint a full picture of the role of clouds and aerosols in our planet’s climate. And we also delve into research investigating how global warming is changing clouds and why this could bring about extreme weather and rain, and we look at how aerosols – crucial for cloud formation - are changing due to anthropogenic pollution.
In October, Horizon discovers a futuristic world of transparent e-books, plastic solar cells and electronic skin with a look at some of the applications of organic electronics. We speak to organic chemist Prof. Andreas Hirsch about how using carbon rather than silicon in electronics can make them flexible, lightweight and biocompatible and could lead to a new generation of human-looking robots and ‘chemical’ computing. We take a look at work to create electronic skin – self-healing, stretchable material that can mimic some of the functions of human skin – and its potential uses. We discover how thin, flexible, plastic solar cells could turn surfaces such as cars and fabric into sources of renewable energy, and we uncover some novel approaches to charging wearable electronics.
Live vaccines can give health effects beyond just protecting us from a specific disease and may even help us combat other infections such as Covid-19, according to Christine Stabell Benn, a professor in global health at the University of Southern Denmark.
Using light as an energy source, photosynthetic microalgae can be used to produce products like biofuels and cosmetics. But algae grown in a reactor block out the light on which they feed. New reactor designs could solve this problem and help the industry move forward.
Prof. Christine Stabell Benn is studying the wider effects of common vaccines.
Stephan Borrmann’s detective work required help from a high-altitude former spy plane.
Dr Kate Rychert studies ocean plate structures.