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Home » Fine-tuning the climate | DW Documentary technology documentary 2021

Fine-tuning the climate | DW Documentary technology documentary 2021



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.

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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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31 thoughts on “Fine-tuning the climate | DW Documentary technology documentary 2021”

  1. Oh no… please no more interfering in the planets ecosystem that we still don't get in it's entirety and because of this lacking knowledge we just caused harm to it, even without geoengineering.

  2. How about all gov and "whoever" stop playing god and leave the earth alone. Image the life we would all have if they stopped poisoning people and stopped all this fear porn. Everyday 24/7.

  3. After Covid 19 which will net the Big Pharma 135 Billion per year , Climate change is the Best Money Spinner That ever came down the Pipe , See Michael More Film , Planet of the Humans.

  4. They only stress and push the "climate change " is because of this reason …. last 20-30 years of geoengineering is melting and warming the planet faster than 140 years of pollution yet they don't believe because is now a POLITICAL AND WALL STREET PROBELM FOR GEOENGINEERING TO CONTINUE WITH IT CAUAE ITS A PROFITABLE BUSINESS AND ITS ALSO WHATS CAUSING MEGA DROUGHTS , INTENSIFIED STORMS BY CLO U D SEEDING AND THE NEXRAD SYSTEM

  5. Hasn't science already been proven to make too mistakes and caused detrimental affects. Leave natural process alone. Of course it is too late to say leave nature alone, since you've already created problems that can't be taken back. There is too much you don't know to make a decision for the future.
    Government doesn't give a crap about anything but money, another problem. Military watches out for government.

  6. This people called "scientists" are pathetic like the solutions they propose .
    When will NATO act against countries like Brazil and Indonesia for ex ,countries that are obliterating the humid forests of the world and are perpetrating a large scale ecocide and a genocide against indigenous people ?
    This is happening NOW !!!
    Amazonia ,Sumatra and Borneo will never, ever grow again…its irreversible .
    This are the wars that are worth fighting !

  7. Surely it's clear we can't just wait for technology to solve the "CO2 situation" we have many much worse pollutants than that, imho, we need to make structural changes to the way we do things? Our corporations have shown almost zero cooperation in terms of project save earth, we need serious structural reforms – or nothing is going to mitigate what we are outputting.

  8. I think Chris is a bit of a hypocrite, all very well to say let’s restore things back to how they once were but In large parts of the world this is simply not feasible without having to displace large numbers of people and destroy their livelihoods.

    Geo Engineer it out, I mean it was human ingenuity that got it into this situation.

  9. The principle of ecology and environmental restoration or management is to do as little as possible to move in the direction of survival. We should co what we know to do. We should not try to do unknown things without correcting what we know to correct.

  10. Doesnt atmosphere heating accelerate with the increases of radio waves from cellphones…. they admit it heats our human body that we shouldn't hold it close..so why not the earth??

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