its wild how Global warming could
cause alot of damaged in the future
but in the past is now thought of to
once save life on the planet long ago
by warming the ancient atmosphere enough to prevent the entire planet
from being covered with massive sheets of ice
currently scientists says emissions need to peak and start falling in the 10 to 15 year time frame to keep global temperatures from rising more than 2 degrees. That is a level beyond which many scientists fear will cause widespread species extinctions and harm to the massive Greenland ice sheet, whose melting would lead to extensive flooding in low lying coastal area of the world.
Temperatures have already risen about 0.7 degrees during the 20th century due to human activity, according to current estimates.
To hold temperatures to a 2 degree increase, greenhouse gas concentrations will have to be stabilized at a level “well below” 450 parts per million, if all harmful gases are measured in terms of carbon dioxide, the declaration said. The current reading is about 430 ppm and rising by approximately 2 ppm a year.