Don Kershaw

Rated 4.25(4) — Don Kershaw

What could you do to reduce your carbon dioxide production? This app is a quick way to find how much carbon dioxide you produce in a year, this is your carbon footprint. Scientists consider carbon dioxide production to be one of the trigger factors for...

Rated 3.24(17) — Don Kershaw

This is an app to practice using the Major System to memorise long numbers. This system is used by many experts and a Google search will bring up many examples of its use.The Major System is well described in the excellent book "Moonwalking with Einstein.