Whether it's to escape cold weather, visit family or friends or explore a new place, a lot of you out there probably have a trip or planned this winter. And chances are that most of you will be flying to get to your destination. Millions of people are in the air everyday, and unfortunately that has serious consequences for our environment.

Back in 2008, the UN Intergovernmental Panel on Climate Change put out some alarming statistics on flying: every year, planes burn around 130 million tons of fuel. If you think that's bad, that number is supposed to climb to 450 million tons by the year 2050. Of course, many airlines out there are working to make their planes more green-friendly by doing things like eliminating pollutants from jet exhaust and developing bio-fuel technology.

But what can you do? Flying is unavoidable sometimes–taking a bus or a train just isn't an option for some trips. But you can be more aware of the impact your flights have on the environment. Here at Global Ideas, we have a useful emissions calculator that gives you an idea how much each flight you take is contributing to global warming. In fact, we use this calculator to offset our own trips!