Think twice about green travel

The Guardian's travel section writes (for British readers): "Responsible Travel has an array of intriguing trips, including a sustainable cycling adventure in Hawaii. Get your hands dirty learning about permaculture landscaping, organic gardening, composting and green buildings while pedalling and hiking through tropical rainforests and active lava fields."

As bristol greengage sagely comments: "A return flight from Heathrow to Honolulu will produce about 3.5 tonnes of carbon."

Categories: energy, travel, environment, oil