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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To accomplish this, Guallarte wants to bring sustainable industries and agriculture to our urban centers, with greenhouses atop every building. But in order for Guallarte’s proposal to work, he says, cities will have learn to submit to the laws and principles of nature.

Urban planners also have big plans for our energy supply. In the future, countries like Germany could become energy producers. In Esslingen am Neckar, residents are working on producing green hydrogen in homes, to be used as fuel for trucks. It’s a project that‘s breaking new ground, says investor Manfred Norbert.

Our future cities will be all about redefining a new normal. Architects and urban planners are expecting to see entirely new approaches to communal living, as well as new urban concepts for autonomous supply chains. The repurposing of old buildings, and the generation of food as well as energy, are other important topics.

The architect Arno Brandhuber thinks the current building stock available, and the possibilities it offers, have been underestimated. His spectacular business headquarters are located in an old silo in Berlin’s Lichtenberg district. His most provocative project, something he calls his “Anti-villa,” is a repurposed East German factory for cotton knitwear. It‘s a prime example of sustainable design.

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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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