This document discusses sustainability and ecological footprints. It defines sustainable development as meeting present needs without compromising future generations' ability to meet their own needs. It defines an ecological footprint as measuring an individual's impact on the planet in terms of how many planets' worth of resources that lifestyle requires. It then lists cities in the UK and their ecological footprints in planets consumed, with some cities consuming over 3 planets worth of resources. It asks what can be done to achieve a sustainable future, listing education, recycling, conservation and technology as potential solutions.