Some facts for you guys (i finished this 'global warming' subject a few years ago)
World energy consumptionprediction = 57% increase of world energy consumption from 2002 to 2025
The current break down of energy supplies for humanFrom: Oil (39%), natural gas (23%), coal (24%) ==> fossil fuels sources in total > 80%
Nuclear (7%) and renewable (8%)
It is predicted that that composition will not change much (just a few %) by about 2025MiscellaneousChina and India's emission will surpass industrialised countries' emission by 2018
CFC stay longest in the atmosphere (take 50-400 years to get lost), then N2O (1-50 years)
Global warming potential (an indicator) is highest for N20
Green house gas= CO2, CFC, H2O, N2O, CH4the concentration of GHG increases exponentially since industrial revolution
It is linked to global warming because it blocks the infra-red radiation (long-wave) going out of the earth.
GHG interacts with O3 and consume it, so the O3 layer get thinner as well.
Renewable energyWind, hydro, solar, wave, geothermal + biofuels, hydrogen
Now = 8% of world energy consumption and is predicted to remain so by 2025, even if we try to increase it
It is more expensive to produce
It is less efficient
To reduce its cost, a lot of investments are needed
Some impacts of global warmingRise in temperature
Change in hydrological cycle
Rise in sea level
Extreme events increase in frequency
There you go, keep emitting CO2 and our children wont have to spend a lot of money to buy winter coat in the future