climate change – Watch documentaries of all time

Bioplastics and other innovations against climate change |

Albert — Mon, 28 Apr 2025 16:00:10 +0000

Flooding caused by heavy rainfall is a regular occurrence — and a consequence of climate change. Weather extremes are no longer limited to certain parts of the world: they’re now part of everyday life in Germany too.

Researchers from various disciplines are determined to fight climate change. At Kassel University in the German state of Hesse, for example, research is being carried out on a new method of producing concrete that is low in CO2 emissions.

In the neighboring city of Giessen, two researchers invented bioplastic – by chance. What began with a forgotten petri dish is now set to revolutionize the region’s packaging industry.

All these examples show how science is working hard to protect the climate. The film takes viewers into the laboratory — and explains the relevance of today’s research for how we’ll be living our lives tomorrow.

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Africa‘s tech pioneers – Innovative solutions for a sustainable future |

Albert — Thu, 27 Feb 2025 17:00:10 +0000

Ten of the world’s fastest growing economies are located on the African continent. Companies in the field of science and innovation are being promoted. Climate-friendly ideas for the future are already being realized in African countries.

Africa has the youngest, fastest-growing population of any continent. This is reflected in the innovative strength emanating from many African nations: young scientists in particular are being supported and are developing creative, climate-friendly strategies that have the potential to solve global problems.

At the same time, many African countries face immense challenges: political crises, wars, population growth and climate change. Solutions are being developed on a local level. In Kenya, for example, a team of young scientists has succeeded in using new technologies to reduce the price of animal feed production. Mobile communication solutions from Nairobi deliver knowledge and education in indigenous languages to the remotest regions of East Africa. Kenya and Uganda are already supplied with more than 90 per cent renewable energy. A young Afro-German entrepreneur in Kampala is taking advantage of this – he wants to expand e-mobility in private transport. The municipal healthcare system in Accra, Ghana, is already working with artificial intelligence developed in Africa.

However, climate change caused by industrialized nations in the northern hemisphere poses a particular threat to Africa. Of the almost 1.5 billion Africans from 54 countries, as many as 117 million people could be at risk from rising sea levels in 2030.

By 2100, Africa’s total population could be around 3.8 billion. One solution under consideration is to build a floating city in Lagos, Nigeria, that can adapt to the consequences of climate change.

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Fake steak – Future-proof food and lab-grown meat |

Albert — Fri, 27 Dec 2024 17:00:05 +0000

All around the world, entrepreneurs and scientists are looking for a way out of factory farming. They’re concerned by the issue of animal welfare. But a primary motive is the ecological impact of industrial livestock farming.

Industrial livestock farming is responsible for around 15 percent of global greenhouse gas emissions. It also requires huge amounts of land and water and is thought to be contributing to the rise in antibiotic-resistant infections in humans. This is why more and more scientists and entrepreneurs are conducting research on alternatives to conventional meat production.

In California, Joshua Tetrick is working on a method of growing meat in a bioreactor. He multiplies the muscle cells of chickens in huge tanks and cultivates them with plant-based nutrients. The resulting cell pulp is molded into fibrous meat with the help of a plant scaffold. A kilo still costs many hundreds of dollars. But Joshua Tetrick hopes that production can be scaled up to a globally relevant level. After all, with ‘Good Meat’ he was one of the first two companies in the USA to receive a license for cultured meat.

At the University of California, Alison Van Eenennaam is trying to make meat production more efficient. Using the gene editing tool CRISPR she’s altered the genetic make-up of a cow so that its offspring are exclusively male. This is a great advantage, as male calves grow faster and consume fewer resources than female calves to produce the same amount of meat – thereby reducing the carbon footprint of livestock farming.

For Pasi Vainikka from ‘Solar Foods’ in Helsinki, these are all just intermediate steps on the way to a truly sustainable future food: he’s cultivating a whole new category of food in gigantic fermenters: Bacteria that are fed with CO2 and hydrogen and blended to create a product called ‘Solein’. A flavorless, protein-rich basic ingredient that can replace eggs and milk in practically all foods.

Science journalist Ingolf Baur meets some of the researchers and entrepreneurs seeking alternatives to industrial livestock farming around the world.

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Floating cities as an innovative response to climate change |

Albert — Tue, 06 Jun 2023 16:00:16 +0000

Sea levels are rising due to climate change. Many coastal cities are at growing risk of flooding. Architects are trying to react to this development with new ideas, such as floating cities. But this concept is not without its problems.

Architect Koen Olthuis is constructing a floating city in the Maldives, sustainably cooled with sea water. In the Netherlands, Sacha and Jan live in a waterborne section of the Steigereiland neighborhood. It’s based on a complicated feat of engineering – but also depends on cooperation and solidarity. If one home is too heavy, it raises the one next door. Yet Sacha and Jan like its collaborative nature. The residents of the floating neighborhood all love living by the water, not far from the heart of Amsterdam.

In Germany, a University of Kiel project goes even further. Biologist Martina Mühl is researching the possibility of implementing aquaculture very close to home, so residents can tap their own fresh local supply of fish and seafood.

Hamburg and Bremen have been responding to rising tides by constructing ever higher levees. But soon even this will no longer be enough to cope with the growing impact of climate change. This documentary shows possible alternatives to levees and how we might be able to cope with the rising sea levels in the future.

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How technology makes life easier – and what’s still up to you / UNSEEN (5/5) |

Albert — Wed, 14 Jul 2021 16:00:05 +0000

Green tech could help to clean our air, secure our food and protect our cities. An innovative plastic upcycling machine is one promising device made in Taiwan. But can technology really save the planet?

Sometimes it seems like a bad dream: floods, air pollution, traffic jams. Sometimes it feels like we’re surrounded by eco-monsters. But they can be defeated. YouTuber Alex Lin presents state-of-the-art devices. Arthur Zhang builds machines for upcycling plastics. And Japanese researchers are even working on mirrors in space.

DW presents: UNSEEN (Five-part documentary series)
Invisible guests in your food, your hometown sinking, unhealthy dust hiding in your lungs. Discover heroes with amazing solutions – and inspiration for a better life!

Keeping your kids safe from air pollution / UNSEEN (1/5): https://youtu.be/KrsGQpSv5Co
How to avoid microplastics in your food / UNSEEN (2/5): https://youtu.be/acMYHAmNLlE
Fighting the floods: how not to lose your city / UNSEEN (3/5): https://youtu.be/9BTrzAGhy8U
How to cope with traffic jams (without going crazy) / UNSEEN (4/5): https://youtu.be/Hh1Do3PQCWA
How technology makes life easier – and what’s still up to you / UNSEEN (5/5): https://youtu.be/EJi3Vxdyqv0

UNSEEN opens your eyes. We travel through Southeast Asia and discover stories about people whose lives could be yours. In Indonesia, children suffer from air pollution – something doctors, architects and entrepreneurs are fighting with innovative and original concepts. Then we head to Malaysia for an episode in learning how to deal with microplastics in food. We follow a fan of great cuisine on his own personal journey. What’s safe to eat and drink? Which products are good, and which don’t measure up? Next up is Thailand’s capital Bangkok, one of Asia’s sinking cities. Its inhabitants prepare for future floods, adapting their city and seeking tools to make their homes safe. In Vietnam we get caught in gridlock. Nothing new! But this time, we’re stuck with some cool rappers teaching people how not to go crazy in traffic. And finally, in Taiwan, it’s all about green tech. Learn about the hopes and limits of the new technologies being developed to solve life’s challenges. Join us on an exciting trip in five episodes – one that will open your eyes to beastly challenges and promising solutions!

DW’S UNSEEN MONSTERS
#documentary #DWsUnseenMonsters #Taiwan #AI #greentech
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Fine-tuning the climate |

Albert — Wed, 14 Oct 2020 16:15:05 +0000

Engineers and scientists are trying to intervene in the Earth’s geochemical cycles. Because it appears efforts to cut CO2 won’t suffice to avoid irreversible climate change. But does geoengineering offer a real solution? Or is it just human hubris?

Some scientists believe that we need to explore radical, and perhaps dangerous, technologies in order to be able to lower the earth’s temperature through geoengineering in the near future.
Science journalist Ingolf Baur explores the feasibility and risks of leading geoengineering projects. His journey takes him to meet scientists in Switzerland, Iceland, the US and Peru. Along the way, he encounters two very different strategies: One is to fish climate-damaging CO2 from the atmosphere and sink it underground or in the deep sea. The other, and this is the far more controversial strategy, seeks to develop techniques that dim sunlight.

Global warming is causing entire mountain ridges like the Moosfluh above Switzerland’s Aletsch Glacier to break off. Such dramatic changes could increase the pressure to try geoengineering.
Its most prominent proponent is David Keith from Harvard University in the US. He’s devised experiments to to sound out the possibilities of “solar geoengineering.” His idea is for fleets of aircraft to dump millions of tons of sulfur into the stratosphere every year, where it should reflect part of the incoming sunlight back into space. As audacious as this method seems, it’s actually no different to what happens during volcanic eruptions.

Or could we still manage to get greenhouse gases out of the atmosphere again? In Iceland, a group of researchers is using a special process to filter carbon dioxide from the air and pump it 2,000 meters deep into basalt rock. The surprise: after a few months, the CO2 is already reacting chemically and turning to stone, which renders it harmless – permanently. The quantities are still far too small, but it shows that as controversial and risky as some geoengineering methods may be, in the end we may need technology to avert or at least mitigate the effects of climate collapse.

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