Climate change: Can 12 billion tonnes of carbon be sucked from the air?

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It says that only by pulling this heat-trapping gas out of the atmosphere can we avoid dangerous climate change.

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The problem is that scientists reckon that even if the world manages to cut emissions of the gas, it will no longer be enough to avoid the worst impacts.

We’ve got to go a step further, they say, and find ways of doing something never attempted before: get rid of the gas that’s already out there. And get started on it as soon as possible. On an unimaginable scale.

But although the costs are falling, they remain very high and many wonder whether it’s feasible to plaster the planet with so much hardware.

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Not to change the topic here:

Discoveries that can clean up carbon dioxide in the atmosphere

The Intergovernmental Panel on Climate Change concedes that limiting the rise in global temperature under two degrees Celsius before the end of this century is impossible without reducing emission of carbon dioxide to zero by 2050. However, the majority of scientists agree that zero emission alone will not solve the problem of global warming. That is because we have done too much damage to the climate to avoid catastrophe just by halting the burning of fossil fuels. Besides, the current concentration of carbon dioxide in the atmosphere would keep on trapping heat for hundreds of years.

  • Publisher: The Daily Star
  • Date: 2018-11-29T00:00:00+06:00
  • Twitter: @dailystarnews
  • Citation: Web link (Learn more)

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The struggle to suck CO2 out the air and bury climate change for good

Carbon emissions need to come down. And fast. So what if we could suck CO2 right out of the air and hide it underground? The good news: we can. The bad news: it’s really hard to do.

Experiments and trials of carbon capture and storage (CCS) technology offers a glimpse of a future where CO2 from industrial and domestic emissions can be caught, transported and stored in underground reservoirs before it ever reaches the atmosphere. But despite early promise, progress in getting CCS technology to operate at scale has been worryingly slow.

The first time the European Union invested in CCS projects was almost ten years ago now. In an ambitious move to support energy transition, six CCS projects ‘ including one in Hartfield in the UK ‘ were selected to benefit from a ‘3.5 billion fund as part of the European Energy Programme for Recovery (EEPR). Ten years later, all six initial projects selected by the EEPR have been dropped, in most cases for lack of extra funding.

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Climate Solutions: Is It Feasible to Remove Enough CO2 from the Air?

Is there still time to avoid runaway climate change? To a large degree, the answer depends on the feasibility of ‘negative emissions’ ‘ techniques or technologies that suck CO2 out of the air. In the latest report from the Intergovernmental Panel on Climate Change (IPCC), all scenarios for limiting warming to 1.5 degrees Celsius depend on negative emissions technologies, or NETs. Most 2-degree scenarios also rely on negative emissions; many call for removing billions of tons of CO2 per year by mid-century.

Yet most NETs remain either untested or unproved. To help bridge this gap, the National Academies convened a panel of scientists and asked it to propose a research agenda. The panel considered several possible techniques, ranging from the low-tech ‘ planting more trees ‘ to the high-tech ‘ developing machines to scrub CO2 from the sky. It also looked at a hybrid technology that has become known as bioenergy with carbon capture and storage, or BECCS. The panel recommended several billion dollars be directed to research on NETs. Such technologies, it suggested, ought to be viewed as a ‘component of the mitigation portfolio,’ rather than as a futuristic, last-ditch effort to reduce atmospheric CO2.

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From solar panels to changing your diet ‘ 11 ways you can combat climate change

On Friday, 13 federal agencies issued a major report stating that climate change is a threat to Americans’ health and the country’s economic well-being

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Jonathan Harrington, author of ‘The Climate Diet: How You Can Cut Carbon, Cut Costs, and Save the Planet,’ says every little bit of activity to become a more environmentally conscious consumer counts. In his book, he gives out various ‘awards’ to people who try to make a difference in their own lives. A ‘participant’ award goes to anyone who does anything (like separate plastics and paper in the trash), followed by bronze, silver and gold medals. ‘The Climate Diet is about making small incremental changes in the way you, your family or your community inhabits this planet,’ he writes.

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