Levels of greenhouse gases in the atmosphere, mostly carbon dioxide from burning fossil fuels, are at their highest point in 160,000 years and rising geometrically.
(Levels of greenhouse gases in the atmosphere; are; at their highest point; T:in 160,000 years) (Levels of greenhouse gases in the atmosphere; rising; geometrically)
Levels of greenhouse gases in the atmosphere Levels of greenhouse gases in the atmosphere
are rising
at their highest point T:in 160,000 years
geometrically