New Scientist: They may be an unlikely green lobby, but four of the world’s largest airline companies have called on governments to be stricter with them. British Airways, Air France-KLM, Cathay Pacific and Virgin Atlantic have joined forces with the British Airports Authority and The Climate Group, a policy consultancy, in a proposal for a global cap-and-trade scheme that would regulate airline emissions. The airlines want their proposal to be included in the next global emissions agreement, …