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Where we need to be

The short answer to where we should be is back to where we were before we started emitting all of this carbon into in the air. Realistically, there is no way we are going to ever get back to that point. So instead, we need to get greenhouse gas levels as low as we possibly can. This will involve using less energy, using clean energy, stopping deforestation, driving less and better vehicles that produce significantly fewer emissions.

We need to get greenhouse gas levels as low as we possibly can
Climate change could drastically change the entire planet. We need to limit the damage it does by reducing our greenhouse gas emissions.Credit: Wikimedia Commons
There are a lot of estimates of what happens at various greenhouse gas concentrations, but because of the complexities of the climate, it's hard to have trigger points at which certain things are going to happen. We can make generalizations, but in short, we need to get greenhouse gas emissions as low as we possibly can.

The general thought by reputable scientists is that the Earth's average temperature should not rise more than 2°C over pre-industrial levels or else there may be drastic changes occurring. This is what it is assumed is the level at which climate change becomes dangerous and the costs of adapting to a warmer climate may be unbearable. Scientists claim that there is about a 50% chance of keeping to this level if total greenhouse gas concentration remains below 450ppm. This number is likely to be revised as we get more information and better modeling techniques. We are currently at at about just below 390ppm.
United Nations Environment Programme - Climate Change
Overview of what climate change is
Click now to view
United Nations Environment Programme - Climate Change
Overview of what climate change is
Click now to view
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