from 1970 until 1998 there was a warming period that raised temperatures by about 0.7 f that helped spawn the global warming alarmist movement.
from 1970 until 1998 there was a warming period that raised temperatures by about 0.7 f that helped spawn the global warming alarmist movement.
global warming:22
currently, surface temperatures are rising by about 0.2 °c per decade.