London firm unveils new software for mobile phones that can track transport and allegedly measure carbon footprint | Environment | guardian.co.uk

Keeping track of your carbon footprint could become as simple as slipping a mobile phone in your pocket: a London-based start-up company has developed software for mobile phones that uses global positioning satellites to work out automatically whether you are walking, driving or flying and then calculate your impact on the environment.

Carbon Diem's inventors claim that, by using GPS to measure the speed and pattern of movement, their algorithm can identify the mode of transport being used. It can therefore calculate the amount of carbon dioxide that a journey has emitted into the atmosphere – without any need for input from the traveller.

Welsh Assembly launches climate change activity

The Welsh Assembly launches a climate change television campaign featuring the voice of comedian Rob Brydon this week.

The campaign has been created by Golley Slater and is designed to raise awareness of carbon emissions and to encourage the public to take positive action about the problem around the home.

The ad shows a DVD player, kettle and sink all breaking through the floor or off the wall to illustrate the fact CO2 is measured in tonnes. The ad ends with the strapline “Help Wales reduce its carbon footprint”.