It's no longer enough to live a greener life-now people are being encouraged to be environmentally friendly when they leave the Earth too. Cardboard coffins, clothes sewn from natural fibers, a burial plot in a natural setting. Green funerals attempt to be eco-friendly at every stage. People are trying to think about what's the best way to live and with that, what's the best way to die," said Roslyn Cassidy, a funeral director for Green Endings, which provides eco-friendly funerals. Britain has been a world leader in eco-friendly funerals for years and a source of green burial products and ideas for countries like the United States, where the trend is just starting to catch on. Over the weekend in London, those in the business showcased their products and services at the Natural Death Center's Green Funeral Exhibition. The Natural Death Center provides a handbook that suggests environmental targets for cemeteries. "You can take any funeral and make it greener," said Michael Jarvis, the center's director. In a green funeral, bodies are not embalmed and are dressed in pure fiber clothes. Green campaigners say refrigeration or dry ice is a good alternative to formaldehyde, which can seep into the water system. Biodegradable coffins also differ from the traditional mahogany. Cardboard coffins-which are as thick as their wooden counterparts-can be decorated by family and biodegrade within three months. Small details are important for green funerals, such as using smaller cars instead of limousines in funeral processions. "What people are wanting is to know that they're doing the best they can both for their loved ones and for the environment," Cassidy said.