In this talk Dr Ken Amor talks about the Chelyabinsk meteor, which entered Earths atmosphere over Russia on the 15th of February 2013.

Ken Amor looks at the science of large meteorite impacts on Earth.

Gideon Henderson, Professor of Earth Sciences and fellow of University College, gives a talk on his research on iron content in the atlantic ocean and its necessity for life in the ocean. Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales;...