4 Megaprojects That Could Reverse The James Webb Space Telescope: 1 day ago   19:22

Joe Scott
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Climate change is happening, and time is running out to turn it around. The IPCC's most recent report gives us about 10 years to reverse our carbon emissions. We're not going to get there by reducing our emissions alone. Here are 4 megaprojects that could actually save the planet.

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Biomass Energy with Carbon Capture and Storage
Biomass is the burning of biological material (usually plant matter) to generate energy. BECCS scrubs the CO2 out of the exhaust and sequesters it underground, thus taking CO2 out of the air via that plants and putting it into the ground.

Direct Air Capture
With DAC, giant carbon scrubbers pull CO2 out of the air, after which the CO2 can be used to produce other items like fuel. Two companies that are leading in this field are Carbon Engineering and Climeworks.

Stratospheric Aerosol Injection
SAI is, basically, creating an artificial volcano. The Mount Pinatubo eruption of 1991 cooled the planet by half a degree for 18 months. By flying a fleet of SAI Lofters (SAILs) regularly into the upper atmosphere, we could spread particulates around the planet and cool the atmosphere.

Space Solar Shield
By creating a giant solar shield at the L1 Lagrange point, we could block up to 2% of the sun's rays, enough to alter the amount of heat getting trapped by the atmosphere.


Tim Kruger Ted-Ed
Uses natural gas to create energy while pulling CO2 from the atmosphere

Jennifer Wilcox - TED



Carbon Engineering vid








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#answerswithjoe #climatechange #globalwarming

Comments 3347 Comments

Alex Powers
So reverse fracking? come on.... Or are we talking chem trails?
Max Crypto
Never stop!
Max Crypto
I love your videos man.
Vick Singh
Miami Miracle proves there is more than one play to call instead of a hail mary. We have hope!
Gregory B. Howard Edmonds
Dude! Climate Change is a hoax. It is not happening! Its a scam, that is becoming obvious.
Lee Burgin
ALL of the carbon in fossil fuel came from where?.....The air that it's going back into. Nothing is being created or destroyed here.
Reverse Climate Change? Don't be stupid.
Evan Murri
Love the topic of this video; HATE THE TANGENT CAM!!!
The Tangent Cam has a pretty drastic Color Shift from the main camera, So much so that it is very distracting. The footage from the Tangent Cam looks washed out and also a little out of focus (or at least gives a warped perspective compared to the main cam).
If it is possible to tune the Tangent Cam to give the same color balance as the main cam (which is a much more pleasant color---even if it's not accurate), then by all means do so. Or buy a new camera (presumably the same make and model as the main cam, to give the same color balance). OR MY OWN OPINION, forget the tangent cam---I THINK IT DETRACTS RATHER THAN ADDS.
Like I said, love your videos. For me, the Tangent Cam makes them worse, Not better.
Climate stasis by 2020
Kevin Roberts
You can't make everyone happy 100% of the time. Just do what is cost effective. If you worry about carbon, stop using stuff that creates carbon.
I don't want people taking away the amount of light hitting my property. I don't trust people to not text and drive. Much more regulate the Earth's temp.
We Are Miles From Nowhere
Crazy Blaine
So global temps are down for the third year in a row.... co2 is at an all time high.... Me thinks there is only one knob on temperature not two. How many more years of lower global average temps with higher co2 levels will it take before the flat earther's stop demonizing co2?  

But I suppose the noble lie of climate change is really trying to spark renewable energy technologies...which I support.... I just hate being lied to.
Daniel Henry
I'm a futurist and I love videos about technology. I'm interested in how to solve problems like climate change. But, the constant misplaced moralizing makes videos like these so difficult to watch. If I get watch one that, for once, didn't treat carbon dioxide as though it were a pollutant, characterize fossil fuels as a pointless and dangerous addiction (as opposed to the slightly problematic but life-saving energy powerhouse that they've been thus far), capitalism as a necessary evil, etc. it would be so much easier to get into the groove of really considering these ideas.
Methane ..... what’s the plan?
shawn edwards
You mention how power plants want the government to pay for the carbon capture equipment, but do you realize how heavily subsidized the wind industry is?
Ian Macdonald
All of this assumes than carbon dioxide is the principal greenhouse gas. It isn't. Water vapour is. The sheer cost of doing this will have serious adverse effects for humanity, and if as is likely it does nothing..
Ronald Garrison
An AMAZING amount of confusion here. I'm having a bad week WRT this stuff, but guess I'm going to have to respond:

We're doing what Elon Musk so rightly calls "the dumbest experiment EVER." And what you propose is another, even bigger, possibly dumber experiment? I guess I've you're confused, most other people are as well, and there's a hell of a lot of work to be done. But then I figures as much/

We need to convert to renewables ASAP. You say it's happening too slowly, but when you view the growth for what it is, which is an exponential progression, it's clear it's on a path to happen much sooner than you think. Yes, faster than YOU think, just judging from what you said.

Thorium reactors and fusion are NOT solutions in a soon enough time frame to be game-changers. Sorry, they're cool ideas, but they just aren't going to do what needs to be done by 2050. It's just not going to happen.

BECCS and the like: It sounds all nice and organic, doesn't it? But anything organic on that scale is going to have a major ecological footprint, and exactly what it will do is not predictable. It just isn't. Besides, getting all that extra biomass to grow and get to the BECCS plant is tricky, and a hell of a lot of hard work, that most people won't do if they have any choice.

I'm more and more convinced that air capture is the way to go. Not only can you expect it have a modest eco-footprint, and a modest labor requirement, but here's the biggest thing of all. Unlike all those other whacko ideas like dumping iron filings in the oceans, it's energy-intensive. Why is that good? Because we will not be ABLE to do it until we have abundant, clean, CHEAP, renewable energy. That's what needs to happen first, and it pretty much MUST happen first, for hard economic reasons.

But once it's done, we'll be totally into renewables, so this capture and storage need only be done once.

BTW air capture can be done most anywhere, so it can be sited where long-term storage prospects are good.

All the other options are ones that, quite frankly, I find frightening.
check out nuclear, it helps with allot of our issues.
Paul Gopercok Van Leeuwen
people are forgetting that co2 isn't the only green house gas. methane is a huge problem too
Echo 22
Why not just use solar and plant trees?

Whispering brees: no money in iiiiiiiiiit...
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The James Webb Space Telescope: 4 Megaprojects That Could Reverse 1 day ago   13:07

The Hubble Telescope opened our perspective of the cosmos and our place in it. But the James Webb Space Telescope may show us the very origins of our universe.

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Animation of the JWST launch and deployment:

JWST focusing procedure:

JWST Documentary:


So let’s talk about what we’re getting for our $8 billion dollars shall we?

The first thing everybody talks about with the JWST is the mirror. Or I should say mirrors.

The collecting surface is a massive 6.5 meters, or 21.3 feet, as tall as a two story building. The only way to get a mirror that size into space is to fold it up, so the mirror is made out of 18 hexagonal gold-coated beryllium units that fold together to make one surface.

By the way, the mirror on the Hubble - the mirror that gave us an entirely new perspective on our universe by showing us things we didn’t know were there - is 2.4 meters. This DWARFS Hubble.

And unlike Hubble, which could see in the infrared, visible, and ultraviolet wavelengths, JWST’s will focus on the infrared spectrum

The reason is because JWST’s primary mission is to find the furthest and earliest stars and galaxies in the universe. Think of the Hubble deep field on steroids and meth.

And because of the expansion of the universe, the further a star or galaxy is from us, the more redshifted their light will be.

So the furthest galaxies will be redshifted way down into the deep infrared.

The trick with infrared telescopes is in order to see the smallest frequencies, you have to be really cold. Most Infrared telescopes have very short life spans for this reason because they’re cooled with liquid nitrogen or helium. These things are so sensitive that even the heat from the computer on the telescope can mess with the results.

But James Webb cools passively as much as possible through the solar shields. These shields are the size of a tennis court but are thinner than a human hair.

They have to be insanely thin to keep from weighing too much.

One specific star JWST plans to check out is KIC 8462852 - Tabby’s Star, which I just covered about a month ago in a video that will likely be obsolete once JWST takes a look at it.

LUVOIR is a 12-meter telescope that can see in multiple wavelengths, including the visible spectrum, which James Webb can’t do.

It would be used to study galaxy formation and examine the early universe even further than James Webb, but maybe the coolest part is it will have an onboard chronograph that blocks starlight, meaning it’ll be able to find exoplanets visibly without the planet’s star getting in the way.

Perched atop Mauna Kea, the Thirty Meter Telescope’s mirror has a diameter of - you guessed it - 30 meters, with a collection area of 655 square meters, made up of 492 individual segments.

This will have capabilities from ultraviolet, through the visible spectrum and into the mid-infrared field, giving it a wide range of wavelengths to cover.

There are a couple more extremely large telescopes in the works worth mentioning, including the European Extremely Large Telescope with a diameter of nearly 40 meters and the Magellan Telescope, both of which are set to be built in Chile.

But all of this is dwarfed by the Chinese five hundred meter Aperture Spherical Telescope - or FAST.

This is a radio telescope that is twice as large as the Arecibo telescope in Puerto Rico. It got its first light in 2016 and has already discovered a pair of pulsars, though it’s still a ways away from being fully operational.

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