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Concrete is the second most-used substance on Earth (behind water), and it’s responsible for eight percent of the world’s carbon footprint. Cement researcher Karen Scrivener shares the research behind a pioneering new kind of cement known as LC3, which could slash carbon emissions from this crucial building material by 40 percent, if adopted at scale.
This talk was part of the Countdown Global Launch on 10.10.2020. (Watch the full event here: .) 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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7E
March 4, 2021 at 1:55 pm
Wear a mask lol
Leftie Snowflake
March 4, 2021 at 6:56 pm
No. Down with mask tyranny 👎
Michael Tyler
March 4, 2021 at 1:55 pm
The stupidity of thinking plant food, the basis of all life on Earth, is a pollutant is so r-worded it hurts my soul.
Christopher Brand
March 4, 2021 at 3:57 pm
The idea that “more is better” for anything that is useful/good in limited amounts is its own kind of stupidity.
Michael Tyler
March 4, 2021 at 4:13 pm
@Christopher Brand So what is the “limited” amount you’re talking about? You must have an upper limit at which disaster strikes and the world burns, right?
Christopher Brand
March 4, 2021 at 4:43 pm
@Michael Tyler no, I don’t personally have such a limit (climate science consensus would be a good place to start). I assume that atmospheric CO2 is the “plant food” you are referring to. More broadly, agricultural fertilizer runoff is a serious pollution problem and both CO2 and fertilizer will kill plants if there is too much, to say nothing of all the affects on people. The premise that plant food can’t be bad (in any amount) is silly 🙂
Robert Gregg
March 4, 2021 at 2:16 pm
It occurred to me while watching this video for the shortest time could there be a more stupid person on the face of the earth!!!
Richo
March 4, 2021 at 2:30 pm
Can we please stop with this CO2 emissions crap. Do the research. Demonizing CO2 is a scam and the world, particularly the western world is falling for it. The scam is getting bigger and more and more people are getting in on it but know this. When all the gas and coal fired power is gone in the west for the sake of CO2 emissions and we enter the next little ice age, who will be hurting then. Everyone! Stop this nonsense now and stop thinking were so important to the Earth’s climate. How narcissistic. The Earth’s climate has been changing for centuries with and without changes in CO2 levels so demonsing a gas, that is essential to life is just absolute stupidity.
TheTruth76
March 4, 2021 at 2:39 pm
Do not use concrete
Get rid of humans
Problem solved
TED
March 4, 2021 at 2:50 pm
I’m not a fan of blowing my own trumpet but I assure you are in good hands
Aldous Huxley
March 4, 2021 at 2:42 pm
Does the 8 percents include the bitumen concrete?
TED
March 4, 2021 at 2:50 pm
Nice comment
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TED
March 4, 2021 at 2:50 pm
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wojciech strzelecki
March 4, 2021 at 3:18 pm
‘There is something fascinating about science. One gets such wholesale returns of conjecture out of such a trifling investment of fact’
Also
‘Many a small thing has been made large by the right kind of advertising.’
And
‘Get your facts first, and then you can distort them as much as you please…’
Chris
March 4, 2021 at 3:47 pm
being stuck in a concrete industry, You cant do without concrete. all it would take is someone not beholden to concrete industry, to produce another material that is stronger, weighs less and doesnt need a large carbon and water footprint. they dont “like” concrete in countries with little drinking water that concrete demands but they have no alternatives.
Nick Schroeder
March 4, 2021 at 3:48 pm
1) By reflecting away 30% of ISR the albedo, which would not exist w/o the atmosphere, makes the earth cooler than it would be without the atmosphere like that reflective panel set on the dash. Remove the atmosphere/GHGs and the earth becomes much like the moon, a barren rock with a 0.1 albedo, 20% more kJ/h, hot^3 on the lit side, cold^3 on the dark. Nikolov, Kramm (U of AK) and UCLA Diviner mission all tacitly agree.
2) the GHG up/down welling, “trapping”/”back” radiating/delaying/intercepting, 100 % efficient, perpetual warming loop requires “extra” energy which according to RGHE theory it gets from
3) the terrestrial surface radiating that “extra” energy as a near ideal .95 emissivity black body which
4) it cannot do because of the non-radiative heat transfer processes of the contiguous atmospheric molecules.
1+2+3+4 = 0 Greenhouse Effect + 0 Greenhouse gas warming + 0 man caused climate change.
Ron Simmons
March 4, 2021 at 4:03 pm
Question: What is the ideal CO2 PPM? 1000, 2000? It was >6000 in the past when life-on-earth exploded.
TED
March 5, 2021 at 1:47 pm
Nice comment
I will advice you to invest in Crypto (Bitcoin) with Thorson Rockwell and earn huge profits with his Strategies.
…
TED
March 5, 2021 at 1:47 pm
W.H.A.T.S.A.P.P
+…1.2.1.3.9.2.1.7.4.6.4…
Sepuku78
March 4, 2021 at 4:08 pm
Never said about the cost of LC3, usually it’s the cost that matters
KiKiStarling
March 4, 2021 at 10:46 pm
Yeah, but if you’re heating it significantly less (using less energy = saving money) and you don’t need new equipment, it’s probably pretty affordable. I mean, it mostly sounds like the ingredients haven’t changed, it’s just the proportion of them and how they’re combined.
TED
March 5, 2021 at 3:22 pm
AVAILABILITY ON W.H.A.T S.A.P.P ASSURED…✅
+…1.2.1.3.9.2.1.7.4.6.4..
Gamer 49
March 4, 2021 at 4:08 pm
How about just mixing in dirt or clay and use pressure allowing 50-90% less cement to form building blocks and pillars (can still be done onsite). We need KISS solutions, not more complexity, and further importation of goods creating additional emmesions.
__
March 4, 2021 at 7:55 pm
👍 Using what is available. Good thinking 💡
Aadit Shah
March 4, 2021 at 4:18 pm
POV: You clicked to make a funny Karen comment…
Remy Lebeau
March 4, 2021 at 4:21 pm
You don’t need to reduce what isn’t harmful. Destroy the governments, they are the largest polluters in the world.
TED
March 5, 2021 at 1:46 pm
Nice comment
I will advice you to invest in Crypto (Bitcoin) with Thorson Rockwell and earn huge profits with his Strategies…
Prajwal Chavan
March 4, 2021 at 4:31 pm
Why don’t they just destroy America? The result will be the same if not better 🤔🤔
Rebeccablackford7794
March 4, 2021 at 5:03 pm
Why!? Plants breath it to make oxygen for us!? Oh I see the plan here…. All life is carbon! Oh I see that too another agenda….
__
March 4, 2021 at 7:53 pm
😕 Except when humans cut down millions of plants, while pumping 100000s of TONS of CO2 (🚗💨) into the sky…
The climate crisis is REAL
{-_-}
March 4, 2021 at 7:53 pm
😕 Except when humans cut down millions of plants, while pumping 100000s of TONS of CO2 (🚗💨) into the sky…
The climate crisis is REAL
Rebeccablackford7794
March 4, 2021 at 9:12 pm
@__ I would be more more concerned about the sun being at extreme grand solar minimal right now and a mini ice age. Starvation. J/S.
Rebeccablackford7794
March 4, 2021 at 9:12 pm
@{-_-} I would be more more concerned about the sun being at extreme grand solar minimal right now and a mini ice age. Starvation. J/S.
noracan
March 4, 2021 at 6:15 pm
oh my! Better cap those polluting 30 active volcanos!!!!! Dadgum Patriots setting them off to foul the environment! Lets see, 1 volcano equals the pollution of ??????how many cars?? God is in control, not man.
__
March 4, 2021 at 7:51 pm
🤦 NO
The climate crisis is REAL
{-_-}
March 4, 2021 at 7:51 pm
🤦 NO
The climate crisis is REAL
Bernard El
March 4, 2021 at 6:24 pm
I can’t hardly believe TED shared an idea worth sharing. More of this, please.
TED
March 5, 2021 at 1:46 pm
W.H.A.T.S.A.P.P
+…1.2.1.3.9.2.1.7.4.6.4..
A Whole package
March 4, 2021 at 7:32 pm
❤️❤️❤️
TED
March 5, 2021 at 1:44 pm
W.H.A.T.S.A.P.P
+…1.2.1.3.9.2.1.7.4.6.4
A Whole package
March 5, 2021 at 2:09 pm
@TED take love
Lixia Stone
March 4, 2021 at 7:43 pm
Folks, Jesus Christ, the Son of God, died for our sins.
He was buried and resurrected on the third day.
Believe on Him to be saved.
Concerned Citizen
March 4, 2021 at 8:42 pm
Any high-schooler knows that CO2 is NOT a limiting factor in photosynthesis… Plants gobble up ANY excess CO2.
edi
March 4, 2021 at 9:11 pm
What does _same material properties_ even mean?
I see concrete crumbling after a decade whereas ancient Roman one holds up after two millennia and our favorite WWII villains built bunkers the allied failed to destroy with tons of explosives…
Cunning Chaos
March 5, 2021 at 12:49 pm
Roman cement was lost in time, modern cement can withstand more extreme weather conditions though iirc
edi
March 5, 2021 at 1:06 pm
@Cunning Chaos AFAIK, we do have old recipes of how to make it and I thought that it was more resistant to weather, but less pressure-resistant, thus allowing only shorter buildings. Moreover, it can’t be poured…
jin li
March 4, 2021 at 9:38 pm
Fack news
All that is cheat people
jorgedefoe1
March 4, 2021 at 9:51 pm
WONDERFUL!!
You can use it to build the 200+ coal fired power stations under construction right now in China.
CO2 is a scam perpetrated by the same people who are fucking us over with CV19 and many other lies. See WEF’s The Great Reset
Sure we need to care for our world and change what we do…. but the BIGGEST change we need is to ban the soulless global corporations that have caused all this mess in the first place. Starting with usury based banking.
Diamond Cojones
March 5, 2021 at 2:33 am
Put restrictions on china
Diamond Cojones
March 5, 2021 at 2:38 am
How much from 1 single volcano eruption? I was told by a geologist that 1 eruption puts out more than every country combined and also thst earth is just going through a repeating cycle and also the poles are shifting
TED
March 5, 2021 at 4:16 am
Nice comment
I will advise you invest in crypto (Bitcoin) with Keith Albert and earn huge profit with his strategies….
TED
March 5, 2021 at 4:16 am
AVAILABILITY ON WHAT SAPP IS ASSURED….✅
+1404-796-9955..
NO NAME
March 5, 2021 at 9:01 am
Dont pay any attention to the Sun lol
酒井正覚
March 5, 2021 at 9:57 am
eichi
TED
March 5, 2021 at 3:04 pm
Nice comment
I will advice you to invest in Crypto (Bitcoin) with Thorson Rockwell and earn huge profits with his Strategies.
TED
March 5, 2021 at 3:04 pm
AVAILABILITY ON W.H.A.T S.A.P.P ASSURED…✅
+…1.2.1.3.9.2.1.7.4.6.4
Naveen Kumar Singh
March 5, 2021 at 11:13 am
If we are unable to reduce our pollution leave the earth. Nature can help itself without human interference space knowledge will be waste if we can’t save other own planet.
Spread knowledge ,spread humanity.
Hasina Khanam
March 5, 2021 at 2:13 pm
Wonderful talk! CONGRATULATIONS for 19M subscribers😍. Hope you would keep bringing such amazing talks in the future as well.
Joe Felix
March 5, 2021 at 9:20 pm
Reason why everybody should have a profitable investment running. People need money.
vishesh kumar
March 6, 2021 at 8:44 am
Bio concrete?
vishesh kumar
March 6, 2021 at 8:46 am
“20% pollution is caused by clothes production.” A fact I think everyone should know. By simply buying less clothes or just sufficient can help a lot. Thanks
Arno De Coster
March 9, 2021 at 1:42 pm
I think it has also to do with the place where the clothes are made. If you buy clothes from 10 euros, they are normally not made in good conditions. But if you buy clothes from about 50euros, you can be sure that the working conditions were already a lot better than the conditions with the cheap clothes.
vishesh kumar
March 9, 2021 at 3:29 pm
@Arno De Coster May be may be not…..
Caleb M
March 10, 2021 at 6:33 am
I support green nudism.
Malte Vetter
March 7, 2021 at 4:44 pm
If all emissions were captured during its production, concrete could become a carbon sink, because it reabsorbs some of the carbon during its life time in buildings
Mark Derlo
March 7, 2021 at 6:04 pm
CO2 is not a pollutant as such; vegetation loves it and also CO2 is actually not linked to climate warming; true (!) historical archeological data shows that there is no link between CO2 levels and average air temperature !
It is the basics of data analysis not to adjust or selectively choose results to back up the thesis, yet this is exactly what so called greenies have been doing for years, including falsifying the results;
When climate really cools down in a few coming years, then those CO2 fighters will find another false reason to fool mankind again. Earth atmosphere has been cooling down already for the last few years.
And the cooling will keep progressing, I wonder for how long they will be able to keep telling us fairy tales about warming when more and more areas will be hit with unprecedented cold weather.
It is so sad that most people on Earth got fooled by those greenies and polititians.
Self-Education Methodology
March 8, 2021 at 5:34 pm
👋👏👏👏SEM
Dr Logan
March 9, 2021 at 6:54 am
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March 9, 2021 at 7:49 am
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Arno De Coster
March 9, 2021 at 1:45 pm
Now I’m interested in the extra costs for companies to produce in a way like this. That’s the only thing that is not mentioned in the video but it is a really important thing!
Stefan Boyadzhiev
March 9, 2021 at 1:58 pm
Is that a “revolutionary material” or a simple advertising, exploiting the climate change?????