Former Christmas Lecturer, Professor Mark Miodownik admits a (healthy) addiction to his favourite element, Oxygen. Making up roughly 21% of the air we breathe, element number eight literally lights our fires and is vital for life on earth.

Each day in December, we'll publish a new video revealing the elements that really excite and inspire people. For an exclusive first look at the latest video visit the Ri's Online Advent Calendar: advent.richannel.org