The Real Costs *

The Real Costs is a Firefox web browser plug-in that inserts CO₂ emissions data into airplane travel e-commerce websites such as https://Orbitz.com" xmlns:xlink="https://www.w3.org/1999/xlink">Orbitz.com, https://United.com" xmlns:xlink="https://www.w3.org/1999/xlink">United.com, https://Delta.com" xmlns:xlink="https://www.w3.org/1999/xlink">Delta.com, and so on. Like the nutritional information labeling included on food packaging, this plug-in provides emissions information that is otherwise excluded from travel websites.