Just when you thought it was safe to put away your pencil and take off your thinking cap, the Fairtrade Foundation (UK) has brought out an exiting and educational fair trade themed online sudoku game.

According to the site, "There are increasing levels of difficulty depending on your level of skill so get started today - you can even save your last score and pick up where you left off on your next break."

Gameplay: The game is easy to pick up if you have ever played sudoku (wikipedia):

Sudoku (数独, sūdoku^?) listen (help·info) is a logic-based number-placement puzzle. The objective is to fill a 9×9 grid so that each column, each row, and each of the nine 3×3 boxes (also called blocks or regions) contains the digits from 1 to 9 only one time each. The puzzle setter provides a partially completed grid.

Fairtrade Sudoku allows you to guess a value of a box and then through a process of elimination figure out where each shape fits into the grid. The big difference from the original sudoku is that instead of using numbers 1-9; Fairtrade Sudoku uses symbols representing different fair trade products:

Humans can make electricity - Pedalling your bike can make loads of electricity for household use. This seems like a great way to get in shape and reduce GHGs.

• Creates 75 to 200 watts at 12 to 25 volts DC depending on rider's strength
• Bicycle easily disengages from stand for immediate road use
• Stand folds easily for transport
• Power small, household appliances such as a desktop PC, laptop, or stereo