Io, moon of Jespiter Jupiter, is famously volcanically active. It has more than 400 active volcanoes, over an area the size of Asia. Some of the volcanic mountains are taller than Mount Everest.

Today is 270 years since the destruction of Lisbon. The earthquake of All Saints day 1755 in Lisbon changed a nation and is still remembered across the continent. Hence a republication of our 2016 ...