Two Heads are very good!

Try these interactive web-things of beauty and intelligence. The Scale of the Universe zoom was featured on the BBC's Dara O Briain's Science Club - it is a brain-bending summary of our universe from the very biggest to the very smallest things (and back again) that we think we know of... great mind-expanding entertainment and also a very good education tool! Devised and coded by 'the Huang twins' who have also produced other beautiful visual responses to some of the 'hardcore' cutting edge scientific theories... You may never tire of zooming down to the Planck length to contemplate the quantum foam and then passing by the humming bird again on your way to the edge of the observable universe, but amongst the Twins' other visualisations, I was also absorbed by the explanation of the Mandelbrot Set and the zoom journey through this psychedelic infinity - and some of the maths animations for children were... really helpful...

Fractals are pretty cool, Mr Mandelbrot.