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A Concrete Plan for Sustainable Cement | Ryan Gilliam | TED

Cement is one of the most-consumed materials on Earth — second only to water — and it accounts for a whopping eight percent of the world’s carbon pollution. What if we could turn this climate villain into a hero? Clean tech innovator and serial entrepreneur Ryan Gilliam reveals his company’s surprisingly simple process for transforming…

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Cement is one of the most-consumed materials on Earth — second only to water — and it accounts for a whopping eight percent of the world’s carbon pollution. What if we could turn this climate villain into a hero? Clean tech innovator and serial entrepreneur Ryan Gilliam reveals his company’s surprisingly simple process for transforming waste from the cement-making process back into limestone using existing infrastructure, creating a competitive and eco-friendly product that could pave the way for gigaton-scale climate solutions. (Recorded at TED Countdown: Overcoming Dilemmas in the Green Transition on October 30, 2024)

Countdown is TED’s global initiative to accelerate solutions to the climate crisis. The goal: to build a better future by cutting greenhouse gas emissions in half by 2030, in the race to a zero-carbon world. Get involved at

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20 Comments

20 Comments

  1. @Eva-g5n4l

    April 1, 2025 at 7:02 am

    Thank you for working so diligently on your content. Your videos are always a source of inspiration and enjoyment for me.
    🔥🔥🔥 6 🌝

  2. @Olivia-y4v1q

    April 1, 2025 at 7:02 am

    The videos you create are always so stylish and interesting. They are a real treat for the eyes and mind. Keep on pleasing us with your talent!🥅🧉💫

  3. @sooma-ai

    April 1, 2025 at 7:11 am

    Ryan Gilliam presents a solution to reduce cement’s carbon footprint by transforming waste CO2 back into limestone. His company’s process integrates with existing cement plants, potentially cutting emissions by 70-100% while remaining economically competitive.

    • @jwyllor

      April 1, 2025 at 11:58 am

      The name says it all. AI is in the name of this commenter. I see the bots are testing the waters on faking comments now.

  4. @tka-tpa-prapatankalisari45192

    April 1, 2025 at 7:15 am

    Just to say THANK YOU🙏🏼

  5. @tka-tpa-prapatankalisari45192

    April 1, 2025 at 7:16 am

    Thank you for understanding🙏🏼

    • @tka-tpa-prapatankalisari45192

      April 1, 2025 at 7:16 am

      Thank you for everything🙏🏼

  6. @Whoknowswhere12

    April 1, 2025 at 7:24 am

    A solution to a problem that doesn’t exist. If this is ever going to be used the manufacturers will need to be able to write it off or some other benefit that outweighs the current formula. Maybe in a decade or two

    • @zealottk

      April 1, 2025 at 7:38 am

      This makes no sense.

    • @Whoknowswhere12

      April 1, 2025 at 7:46 am

      @ then read it slower

    • @zealottk

      April 1, 2025 at 7:50 am

      @@Whoknowswhere12 what problem do you think doesn’t exist? Why are you saying that companies need to write this off to be beneficial?

    • @Whoknowswhere12

      April 1, 2025 at 7:57 am

      @@zealottk ok so first there’s more proof the change in climate has nothing to do with humans than does. Like a mountain of it. That aside if it was significant enough of a problem, which it’s not, the EPA would be involved with the emissions like they are for coal burning in the energy sector. In a nutshell if it’s not big enough for the EPA to worry about it, it’s damn sure not for the rest of us. If the manufacturers could get a tax break or some other compensation they’ll switch tomorrow. The only other way is they know that change IS about to come so they get ahead of it. Simple enough?

    • @jwyllor

      April 1, 2025 at 11:55 am

      I am curious as well. What problem does not exist in this scenario?

  7. @ThizzMarley

    April 1, 2025 at 8:48 am

    The big emissions ?? So China and India?

  8. @ThizzMarley

    April 1, 2025 at 9:15 am

    These comments are great this company definitely hired bots on fiverr

    • @jwyllor

      April 1, 2025 at 12:00 pm

      Or the bots are testing the waters on auto populating comments now. Le sigh

  9. @JugglinJellyTake01

    April 1, 2025 at 9:33 am

    If the heat from making cement is sourced from renewables AND the heat captured for district heating the CO2 reductions are much greater. It means building the plants nearer to populated areas to make use of that heat.

  10. @urbanstrencan

    April 1, 2025 at 1:27 pm

    This is really important to focus on future of green construction 🏗️🏗️
    Great video and talk

  11. @DominionAnako-bb7ry

    April 2, 2025 at 7:56 am

    ❤❤❤❤

  12. @Bythirteen

    April 3, 2025 at 10:39 am

    well that’s cool

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iPhone Duo Livestream: How Many Folds Can Apple’s Phone Take? Day 10

Apple’s iPhone Duo is out and we want to see how durable it is. So we built a robot to fold it 20,000+ times a day to test its limits. How long do you think it will last? 100,000 folds? 200,000 folds? 500,000 folds? Tune in and watch the testing live. We’ll have CNET’s editors…

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Apple’s iPhone Duo is out and we want to see how durable it is. So we built a robot to fold it 20,000+ times a day to test its limits. How long do you think it will last? 100,000 folds? 200,000 folds? 500,000 folds? Tune in and watch the testing live. We’ll have CNET’s editors online to answer any of your questions.

Join us weekdays from 10:00 AM – 2:00 PM PT / 1:00 PM – 5:00 PM ET

Read more about the iPhone Duo Folding Test on CNET.com
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After the midterms, is the AI industry in for a rough two years? | Equity Podcast

Democrats’ historic victories in this week’s U.S. midterm elections could also transform the tech industry. The public voted on 41 data center-related ballot measures on Tuesday — in all but one, the majority voted to impose more restrictions on data center development. And even when data centers weren’t on the ballot directly, they were a…

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Democrats’ historic victories in this week’s U.S. midterm elections could also transform the tech industry.

The public voted on 41 data center-related ballot measures on Tuesday — in all but one, the majority voted to impose more restrictions on data center development. And even when data centers weren’t on the ballot directly, they were a major talking point, with newly-elected Democratic governors and congressmembers likely to support additional regulation.

On the latest episode of TechCrunch’s Equity podcast, Kirsten Korosec, Sean O’Kane, and Anthony Ha discuss what the election will mean for the tech industry moving forward — not just when it comes to data centers (which OpenAI is already trying to rebrand), but also increased government scrutiny of Big Tech.

Listen to the full episode to hear more about:

• Whether Google first satellite data center is ushering our orbital data center future
• If major layoffs at design software company Canva and website builder Squarespace can be blamed on AI
• Marvell’s $115 billion acquisition of Lumentum, in one of the largest deals in history
• Why CrowdStrike just acquired of two AI security startups
What NBCUniversal’s investment in Indian microdrama startup Elo • Elo means for the media landscape

Subscribe to Equity on YouTube, Apple Podcasts, Overcast, Spotify, and all the casts. You can also follow Equity on X and Threads, at @EquityPod.

Chapters:

00:00 Intro

0:47 Founder Summit recap and an Equity team update

2:23 Midterm results and the data center backlash

7:49 OpenAI rebrands data centers as “compute campuses”

10:57 Wall Street cools on the data center buildout

13:30 Regulatory certainty and building outside the U.S.

15:45 Canva and Squarespace layoffs

20:37 Can AI chatbots replace products like Squarespace?

23:22 Marvell’s $115B Lumentum acquisition

26:51 CrowdStrike buys Fiddler AI and Dreadnode

30:20 Micro drama startup raises $80M

30:59 Outro

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Unboxing Sony’s New $60 USB-C Walkman Headphones

Riding on that resurgence, Bose recently released its USB-C Noise Cancelling Wired Earbuds and now Sony has a $60 USB-C version of its iconic MDR-3 Walkman on-ear headphones, called the MDR-3R. And they sound a lot better than we expected. Unbox them with us. #unboxing #sonywalkman #retro #mdr3r #usbcheadphones Video: David Carnoy Editor: Jon Gomez…

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Riding on that resurgence, Bose recently released its USB-C Noise Cancelling Wired Earbuds and now Sony has a $60 USB-C version of its iconic MDR-3 Walkman on-ear headphones, called the MDR-3R. And they sound a lot better than we expected. Unbox them with us. #unboxing #sonywalkman #retro #mdr3r #usbcheadphones

Video: David Carnoy
Editor: Jon Gomez

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