At some point they are going to run out of things to blame global warming on.

Via Daily Mail:

Earthquakes may contribute to global warming by releasing greenhouse gas from the ocean floor, a study suggests.

Scientists uncovered evidence that a large earthquake in 1945 released more than seven million cubic metres of methane into the North Arabian Sea.

The discovery exposes a natural source of greenhouse gas emissions that has not been considered before, they claim.

As a greenhouse gas, methane is 20 times more potent than carbon dioxide, but less abundant in the atmosphere.

Enormous quantities of methane are locked in icy structures called hydrates on the floors of the continental shelves surrounding the Earth’s land masses.

An estimated 1,000 to 5,000 gigatonnes of carbon is trapped in methane hydrates – more than the total amount released by burning fossil fuels each year.