Without scientific understanding, we don’t run the government, the government runs us” -Carl Sagan, in his final interview.

Last week we released a big batch of new CC-BY licensed content for Citizen Maths a free online course for adults who want to improve their grasp of maths at what in the UK is known as Level 2 (the level that 16 year old school leavers are expected to reach, though many do not).