Three Solutions That Can Slow or Stop Climate Change I NOVA I PBS
YoZF16PZYoU • 2020-06-15
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Kind: captions Language: en there's a solution to climate change actually there are a lot of them humanity has a problem on its hands our climate is changing and humans are the primary driver of that change even thinking about how to solve this problem can feel overwhelming but there's actually a wide set of climate change solutions one way to think about solving this crisis is to boil it down to trying to minimize suffering from climate change related impacts now some life on the planet is already grappling with the early consequences of climate change and some populations are worse off than others if we do nothing the consequences are just gonna get even worse but there are a few things we can do think of it as three kinds of speed bumps we can build too slow and possibly stop us from getting to a really bad outcome the first speed bump is prevention which may have the biggest effect this is where we stop putting greenhouse gases in the atmosphere and where technologies like wind solar and nuclear energy come in prevention would likely be the cheapest and most straightforward solution bring our emissions to zero fast and a lot of the worst consequences of a warming world would be avoided the problem it's probably too late to prevent climate change entirely people have already added a lot of carbon dioxide to our atmosphere enough to warm the planet by more than two degrees Fahrenheit in fact our planet hasn't had this much co2 in the air for millions of years we might need something more the second speedbump undo the problem if we can't stop emitting greenhouse gases entirely can we at least start taking them out of the atmosphere or keep the planet cool some other way this is where negative emissions technologies come in stuff that sucks co2 out of the air including natural processes and machines and even solar geoengineering which reflects some of the energy of the Sun away from Earth thereby cooling the planet a bit to counteract the warming from greenhouse gases the undo plan is somewhat controversial it could be more expensive than prevention demand a lot of energy resources itself or have some severe unintended consequences the third line of defense adaptation this means developing ways to live on a warmer planet a human being could probably live in a world that has way more carbon dioxide than today the dinosaurs did it but civilization would be hugely disrupted our coastlines redraw our agricultural land moved if we could somehow adapt to these changes then theoretically we could still prosper this is where technologies like sea walls or drought resistant crops come in and it doesn't actually have to mean admitting defeat implementing adaptation strategies today will make us more resilient to the vulnerabilities we already face but adapting to a worst-case scenario may mean a gargantuan shift in the world order as we know it and there's a lot we can't plan for for example we can't predict all of the consequences of changing weather patterns or mass extinctions that's why the adaptation solution alone won't fix the problem the higher the Prevention speedbump the lower the others can be but the reality is we're already seeing the effects of climate change and so many argue we'll need to develop all three of these solution sets in tandem how much we invest in one over the other well that's where the debate is at now science tells us how the world is likely to change if we continue on our current path but we also have the knowledge and tools to change that trajectory if we choose to use them follow us on social to watch our next episodes that dive into the solution sets on preventing undoing and adapting to climate change [Music] you
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