Science & Technology

A Concrete Plan for Sustainable Cement | Ryan Gilliam | TED

Published

1 year ago

April 1, 2025

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

@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 🌝

Reply
@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!🥅🧉💫

Reply
@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.

Reply
- @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.
  
  Reply
@tka-tpa-prapatankalisari45192

April 1, 2025 at 7:15 am

Just to say THANK YOU🙏🏼

Reply
@tka-tpa-prapatankalisari45192

April 1, 2025 at 7:16 am

Thank you for understanding🙏🏼

Reply
- @tka-tpa-prapatankalisari45192
  
  April 1, 2025 at 7:16 am
  
  Thank you for everything🙏🏼
  
  Reply
@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

Reply
- @zealottk
  
  April 1, 2025 at 7:38 am
  
  This makes no sense.
  
  Reply
- @Whoknowswhere12
  
  April 1, 2025 at 7:46 am
  
  @ then read it slower
  
  Reply
- @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?
  
  Reply
- @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?
  
  Reply
- @jwyllor
  
  April 1, 2025 at 11:55 am
  
  I am curious as well. What problem does not exist in this scenario?
  
  Reply
@ThizzMarley

April 1, 2025 at 8:48 am

The big emissions ?? So China and India?

Reply
@ThizzMarley

April 1, 2025 at 9:15 am

These comments are great this company definitely hired bots on fiverr

Reply
- @jwyllor
  
  April 1, 2025 at 12:00 pm
  
  Or the bots are testing the waters on auto populating comments now. Le sigh
  
  Reply
@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.

Reply
@urbanstrencan

April 1, 2025 at 1:27 pm

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

Reply
@DominionAnako-bb7ry

April 2, 2025 at 7:56 am

❤❤❤❤

Reply
@Bythirteen

April 3, 2025 at 10:39 am

well that’s cool

Reply

Science & Technology

Investors Are Asking AI About Your Startup

What does ChatGPT say about your startup? Dr. Eike Gerhardt explains why founders should think about what LLMs will find when investors use AI to research their companies. Watch the full episode of Build Mode with Eike and Nephrogen founder Demetri Maxim for more advice on building a stronger investor pitch.

Published

22 hours ago

September 3, 2026

CYBER TECH TV

What does ChatGPT say about your startup?

Dr. Eike Gerhardt explains why founders should think about what LLMs will find when investors use AI to research their companies.

Watch the full episode of Build Mode with Eike and Nephrogen founder Demetri Maxim for more advice on building a stronger investor pitch.

Science & Technology

A PhD in Pitching Breaks Down a Startup Battlefield Pitch l Build Mode

There is no such thing as the perfect pitch. But you can get close by implementing a few research-backed methods to your delivery, deck, and message. In this episode of Build Mode, host Isabelle Johannesen sits down with Dr. Eike Gerhardt, who has aPhD in pitching and spent nearly a decade studying the science of…

Published

1 day ago

September 3, 2026

CYBER TECH TV

There is no such thing as the perfect pitch. But you can get close by implementing a few research-backed methods to your delivery, deck, and message.

In this episode of Build Mode, host Isabelle Johannesen sits down with Dr. Eike Gerhardt, who has aPhD in pitching and spent nearly a decade studying the science of startup pitching before starting Autopoiesis Sciences. And he’s joined by Demetri Maxim, co-founder and CEO of Nephrogen, who came in second at TechCrunch Startup Battlefield 2025.

Together, they break down Demetri’s actual Startup Battlefield pitch to unpack what worked, what could be improved, and what research tells us about how investors respond to founders. Eike explains why credibility signals matter, how technical founders can simplify without oversimplifying, and why Q&A should be treated as a second pitch. Demetri shares how he learned to explain complex biotech to generalist investors, how redesigning his deck changed his confidence onstage, and what he would do differently today.
They also explore how body language and authenticity affect a pitch, how investor questions can reveal bias, and how founders can use AI to prepare for difficult Q&A.

Here are the studies mentioned in the episode:
Kanze, D., Huang, L., Conley, M. A., & Higgins, E. T. (2018). “We Ask Men to Win and Women Not to Lose: Closing the Gender Gap in Startup Funding.” Academy of Management Journal
Figge, P., Graf-Vlachy, L., König, A., Demann, F., & Diessner, M. (2025). “Shades of Grey or Black and White? How Entrepreneurs’ Use of Cognitively Complex Language Affects Investor Funding.” Entrepreneurship Theory and Practice
Clarke, J. S., Cornelissen, J. P., & Healey, M. P. (2019). “Actions Speak Louder than Words: How Figurative Language and Gesturing in Entrepreneurial Pitches Influences Investment Judgments.” Academy of Management Journal
Jiang, L., Yin, D., & Liu, D. (2019). “Can Joy Buy You Money? The Impact of the Strength, Duration, and Phases of an Entrepreneur’s Peak Displayed Joy on Funding Performance.” Academy of Management Journal.
Chen, X.-P., Yao, X., & Kotha, S. (2009). “Entrepreneur Passion and Preparedness in Business Plan Presentations: A Persuasion Analysis of Venture Capitalists’ Funding Decisions.” Academy of Management Journal
Zhu, L. Y., Young, M. J., & Bauman, C. W. (2024). “Linking Anxiety to Passion: Emotion Regulation and Entrepreneurs’ Pitch Performance.” Journal of Business Venturing
Allison, T. H., Davis, B. C., Webb, J. W., & Short, J. C. (2017). “Persuasion in Crowdfunding: An Elaboration Likelihood Model of Crowdfunding Performance.” Journal of Business Venturing
Clark, C. (2008). “The Impact of Entrepreneurs’ Oral ‘Pitch’ Presentation Skills on Business Angels’ Initial Screening Investment Decisions.” Venture Capital

Subscribe to Build Mode:
Apple Podcasts
Spotify
Wherever you like to listen
New episodes of Build Mode drop every Thursday.

CNET

Sennheiser Momentum True Wireless 5 Review: Just What I Was Asking for

Featuring an improved design, including replaceable batteries, along with better noise-canceling and voice-calling performance, the excellent sounding $300 Momentum TWS 5 are top earbuds contender and earn a CNET Editors’ Choice award. Timecode Chapters: 0:00 Intro 0:21 Design Changes 0:41 Replaceable Batteries 0:56 New Features 1:04 Compared to the Momentum True Wireless 4 1:25 Ear…

Published

1 day ago

September 3, 2026

CYBER TECH TV

Timecode Chapters:
0:00 Intro
0:21 Design Changes
0:41 Replaceable Batteries
0:56 New Features
1:04 Compared to the Momentum True Wireless 4
1:25 Ear Tips
1:53 Tight Seal is Crucial
2:01 Sound Quality
2:31 Sony vs Sennheiser
2:48 Noise Cancellation
3:23 Sound Test
3:47 Firmware Update Needed
4:03 Audio Dropouts?
4:14 Robust Connection
4:32 Codecs
4:57 Battery Life
5:17 What Do You Think?

Video Credits:
Host: David Carnoy
Scripted by: David Carnoy
Producer: Numi Prasarn
Camera: Numi Prasarn
Video Editor: Numi Prasarn
Thumbnail Designer: Zooey Liao

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#sennheiser #momentumtruewireless5 #earbudsreview