Re: Sleep is a Good Thing(TM)
I'll make this easy.
Humans emit 35,900,000,000,000KG of CO2 per year and climbing. 1KG of CO2 is enough to fill two baths. Just try and let that number sink in, its huge,
Plants, all of them from the algae in the seas to the forests ran out of capacity to absorb the extra carbon a long time ago. Plans currently taking about half of what we emit. The remaining 17,950,000,000,000KG is accumulating the in the atmosphere per year and every extra KG we emit just stays there. This is why the atmospheric CO2 levels are now skyrocketing. To scale, if you take an average model globe, the atmosphere would be as think as the paint!. It’s not big at all.
CO2 is a greenhouse gas. It traps heat from the Sun in the atmosphere. The more CO2 the more heat is retained from the sun and so the hotter the global average temperature is. We can track the historic CO2 levels (over billions of years) in the atmosphere and they map perfectly onto average global temperatures with a slight lag.
This process is lagged, thus if you put vast amount of CO2 in the atmosphere it takes a few years for the temperature to rise to its new equilibrium temperature. If the CO2 drops it take a good few years for the Earth to cool down. As you may have noticed the earth is quite large and it take a LOT of energy to heat the oceans up, but they store a lot of energy when heated even a little.
Best case we lose most of the ice on Antarctica, and all of it on Greenland, Siberia and the sea levels rises at least 20+ meters. This is already inevitable, the last time CO2 was this high, that had already happened. Now where do humans put all their capital cities? How much of our land is 20M or less than sea-level? Do you like hurricanes, as warmer oceans make them larger and more common.
Worse case is the ocean circulation stops, because of excess fresh water at the polls and warm water at the polls. This has also happened before when CO2 was high and it resulted in the extinction of 99% of all life on earth.
Well no the actual worse case is we hit a tipping point where the system runaways and we make Earth like her sister planet – Venus.