4.1 • 11.9K Ratings
🗓️ 8 April 2021
⏱️ 11 minutes
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0:00.0 | It's TED Talks Daily. I'm Elise Hume. Here's a wild tidbit. |
0:07.6 | Six supply chains are responsible for almost half of all global carbon emissions. |
0:13.0 | That means climate action could take a huge step forward if we helped lower emissions by tweaking the price we pay for products. |
0:19.5 | And it may not be as expensive as we think. |
0:22.3 | In his 2021 talk from TED at BCG, climate impact advocate, hence Boisot, starts out by talking |
0:28.6 | about steel and shows how we could save the planet without breaking the bank. |
0:35.0 | By the end of this talk, I want to have convinced you that we can make a huge step forward |
0:40.0 | in the great fight against climate change by just spending one to two percent more on things |
0:45.7 | that we buy. |
0:47.0 | What you have to know about steelmaking is that it's a humblingly brutal process. |
0:50.9 | We have these huge furnaces that tear apart and recombine elements in |
0:55.4 | materials that have literally been around for millions of years, at temperatures of up to more than |
1:01.5 | 2,000 degrees Celsius. It's a triumph of industrialization, but it's terrible for the climate. |
1:08.2 | More than 5% of all man-made emissions currently come from |
1:11.9 | making steel. And of all the many challenges we face to save the climate, this one's |
1:16.5 | particularly hard to solve. Now why is that? The first reason is technical. There are technologies |
1:22.2 | to produce low carbon steel. We can, for example, capture the CO2 and pump it back under the earth |
1:27.3 | that's called carbon capture and storage. Or we can move to entirely new processes can, for example, capture the CO2 and pump it back under the earth. It's called |
1:27.7 | carbon capture and storage. Or we can move to entirely new processes that, for example, run on low |
1:32.5 | carbon hydrogen instead of coal. But all of these are currently only at a piloting stage. |
1:37.6 | The second reason is economical. This is likely going to be expensive. And to illustrate |
1:43.0 | that, let's compare the steel challenge to that of companies and other sectors. |
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