Would you like 13.6kg of CO2 with that, sir?

Thai Airways has launched new in-flight menus, complete with carbon footprint information.

Thai Airways has become the first airline to calculate the carbon footprint of its signature dishes, allowing customers to be environmentally conscious in the dishes that they choose on-board.

The airline's Chicken Mussaman Curry with steamed Thai Hom Mali Rice produces 13.6 kg CO2 e per 250g serving and its Green Curry "Kiew-Wan" with steamed Thai Hom Mali Rice produces 13.9 kg CO2 e per 250g serving.

Thai Airways' new carbon footprint menus reflect a growing trend in consumer awareness of "food miles," and environmental cost of what we consume, particularly with regard to air travel.

In 2007, Virgin Atlantic introduced the world's first onboard carbon offset scheme, allowing passengers to pay to offset the carbon generated by their flight.