Wednesday 13th December 2017
What Have Volcanoes Ever Done for Us?
Chris Freeman
Today's speaker was Chris Freeman whose talk was titled "What have Volcanoes ever done for us". He passed around several rock samples which he had smuggled out of Tenerife.
Chris presented many slides showing volcanoes and eruptions in Iceland, the Canaries, the Americas and Asia etc. before listing how volcanoes had affected our world e.g. volcanic dust created our atmosphere and changes our climate by dimming the sun. Primitive life started on Earth in volcanic mud and eruptions bring metals such as gold and silver to the surface.