Frozen methane under the seabed is thawing as oceans warm – and things are worse than we thought

Buried beneath the oceans surrounding continents is a naturally occurring frozen form of methane and water. Sometimes dubbed “fire-ice” as you can literally set light to it, marine methane hydrate can melt as the climate warms, uncontrollably releasing methane – a potent greenhouse gas – into the ocean and possibly the atmosphere.

Colleagues and I have just published research showing more of this methane hydrate is vulnerable to warming than previously thought. This is a worry as that hydrate contains about as much carbon as all of…

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