The National Research Council says in a study commissioned by the C.I.A. and other intelligence agencies that clusters of apparently unrelated events exacerbated by a warming climate will create more frequent but unpredictable crises in water supplies, food markets, energy supply chains and public health systems. In other words, climate change is happening right now and extreme weather is increasing in frequency and intensity. So, what kind of world are we leaving to the future generations? Everything is connected and everything is numbered.