Earth has experienced climate change in the past without help from humanity. We know about past climates because of evidence left in tree rings, layers of ice in glaciers, ocean sediments, coral reefs ...
Some parts of Earth's atmosphere are studied continuously ... The balloons also reach the lower part of the stratosphere, the layer above the troposphere. The amount of data generated by these ...
(Because CFCs also erode Earth’s protective ozone layer, their use was mostly abolished in 1989 with the signing of the Montreal Protocol.) The notion that humans could override nature and force the ...