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It's not as though we can keep burning coal in our power plants. Coal is a finite resource, too. We must find alternatives, and it's a better idea to find alternatives sooner then wait until we run out of coal, and in the meantime, put God knows how many trillions of tons of CO2 that used to be buried underground into the atmosphere.
The pace of global warming is accelerating and the scale of the impact is devastating. The time for action is limited - we are approaching a tipping point beyond which the opportunity to reverse the damage of CO2 emissions will disappear.
By burning fossil fuels, we are already dumping 30 billion tons of CO2 into the atmosphere every year, which has a profound effect on the climate. So, like it or not, we're already messing with a system we don't understand.
You're never going to get the amount of CO2 emitted to go down unless you deal with the one magic metric, which is CO2 per kilowatt-hour.
The nuclear approach I'm involved in is called a traveling-wave reactor, which uses waste uranium for fuel. There's a lot of things that have to go right for that dream to come true - many decades of building demo plants, proving the economics are right. But if it does, you could have cheaper energy with no CO2 emissions.
The atmosphere does not fathom whether CO2 comes from U.S. oil or Chinese coal, nor do hurricanes lose force because the Heritage Foundation doesn't believe global warming is a problem. Living systems operate on laws over which we have no say.
Organisms don't think of CO2 as a poison. Plants and organisms that make shells, coral, think of it as a building block.
The scientists who do climate research understand that much of the ever increasing concentration of CO2 in the atmosphere since 1850 must be attributed to burning those fossil fuels to produce the energy that drives industrialization.
We now know that we cannot continue to put ever-increasing amounts of CO2 into the atmosphere. Actions have consequences. In fact, the consequences of past actions are already in the pipeline. Global temperatures are rising. Glaciers are melting. Sea levels are rising. Extreme weather events are multiplying.
The industrialization of China alone would increase by 90 percent the concentration of CO2 in our atmosphere and would at least increase the atmospheric CO2 by at least another 100 parts per million.
I'm really interested in how you create a whole new economy of recycling. It's literally the 'underground economy.' All this stuff that on the surface creates growth and profit, ends up with waste, junk, and CO2. So how do you make it economic to bring new players into the ball game?
It is impossible to talk about slowing climate change without talking about reducing CO2 emissions. Equally, it is impossible to talk about adapting to climate change without considering how we will feed ourselves. And it is out of the question that we can adapt agriculture without conserving crop diversity.
If you ever really want to get away from it all and see something that you have never seen, and have an excellent chance of seeing something no one has ever seen, get in a sub. You climb in, seal the hatch, turn on a little oxygen, turn on the scrubber, which removes the CO2 in the air you breathe, and they chuck you overboard. Down you go.
Natural gas obviously brings with it a number of quality-of-life environmental benefits because it is a relatively clean-burning fuel. It has a CO2 footprint, but it has no particulates. It has none of the other emissions elements that are of concern to public health that other forms of power-generation fuels do have: coal, fuel oil, others.
Even if producing CO2 was good for the environment, given that we're going to run out of hydrocarbons, we need to find some sustainable means of operating.
Almost every way we make electricity today, except for the emerging renewables and nuclear, puts out CO2. And so, what we're going to have to do at a global scale, is create a new system. And so, we need energy miracles.
CO2 is the exhaling breath of our civilization, literally... Changing that pattern requires a scope, a scale, a speed of change that is beyond what we have done in the past.
Climate change is a global issue - from the point of view of the Earth's climate, a molecule of CO2 emitted in Bejing is the same as a molecule emitted in Sydney.
Despite all the progress climate scientists have made in understanding the risks we run by loading the atmosphere with CO2, the world is still as addicted to fossil fuels as ever.
Investigations during the last few decades have brought hydrogen instead of carbon, and instead of CO2 water, the mother of all life, into the foreground.
CO2 is not a pollutant in any normal definition of the term.
Adding CO2 to the air is like throwing another blanket on the bed.
On the environmental front there's concern about global warming and high levels of carbon dioxide, and trees take in CO2 and store carbon.
Undoubtedly, at the moment, the major cause of CO2 emission is what happens in developed countries.
Many people believe the whole catastrophe is the oil we spill, but that gets diluted and eventually disarmed over time. In fact, the oil we don't spill, the oil we collect, refine and use, produces CO2 and other gases that don't get diluted.
A. P. J. Abdul Kalam
C. S. Lewis
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