From March 2008 the European Union's "open skies" agreement comes into force, which means any European-based airline will be able to fly from any city within the EU to any city within the United States, and vice versa. In the opinion of many scientists, we can either have international growth of flights at the present rate or we can have a stable global climate. We cannot have both. Heathrow Terminal 5 is due to open later this month too. Our love affair with aviation begins to look like a dangerous obsession. Read the articles on this here and here. Will we ever change our habits and do we want to? Is the planet important enough?