Between 1980 and 2014, the US experienced 178 extreme weather events that each caused more $1 billion in damages.
14 of the last 16 years are the warmest on record globally. It’s been more than 100 years since the coldest year on record.
Atmospheric carbon dioxide levels reached 400 parts per million in 2013. That’s higher than any level the earth has experienced in more than 1 million years.
~ World Resources Institute (www.wri.org/our-work/topics/climate)
Before the Industrial Revolution in the 19th century, global average CO2 was about 280 ppm. During the last 800,000 years, CO2 fluctuated between about 180 ppm during ice ages and 280 ppm during interglacial warm periods. Today’s rate of increase is more than 100 times faster than the increase that occurred when the last ice age ended.
~ NOAA Media Release "Carbon Dioxide...Tops 400 ppm" (2013)