A tipping point in climate changes and weeding the lawn

Is there a tipping point? Some people claim that there is a point at which the carbon dioxide and other greenhouse gases in the atmosphere reach such a quantity that the atmosphere cannot recover – the tipping point.

After the tipping point is reached the theory goes that our planet will be on an path of catastrophic change which we cannot reverse, whatever we try.  The present level of carbon dioxide in the atmosphere is 381 parts per million although it is not evenly distributed. Continue reading