
Inside the powerful fire clouds that pack a volcanic punch
4 September 2019
This rare image shows massive pyrocumulonimbus clouds that form above fires and can funnel as much smoke into the lower stratosphere as moderate volcanic eruptions

4 September 2019
This rare image shows massive pyrocumulonimbus clouds that form above fires and can funnel as much smoke into the lower stratosphere as moderate volcanic eruptions

21 February 2018
Much as an aeroplane leaves contrails, streaks of white cloud condense onto the tiny particles thrown into the air by the exhausts of travelling ships

10 January 2018
The same cold weather that has caused frozen sharks to wash up on the US East Coast has given us a light show more often seen in polar regions