The Earth’s climate is warming at an accelerating rate. The last time it was this warm, modern human beings had just emerged as a species.
This warming is due to an enhancement of the natural greenhouse effect. Naturally occurring greenhouse gases such as carbon dioxide keep the Earth’s surface warm. Its natural level in the atmosphere is 280 parts per million; the current level is 400 parts per million and rising.
The excess carbon dioxide comes from human activity, added through our use of fossil fuels.
Excess warming of the climate is causing rising sea levels as glaciers and ice sheets melt and warming oceans expand. Excess warming is causing extreme weather events. Excess warming is causing droughts that are increasing in frequency and intensity. Excess warming is causing more violent tropical storms. Excess warming is causing wildlife, insects and the diseases they carry to move away from the equator and towards the mid latitudes.
Human-induced global warming is real, it is supported by 97 percent of the scientific studies and papers published about climate science and by 195 of the nations of the world and their science communities.
