Teenagers worry about global warming but don't know why

At a time when kids should be concerned about acne and a Spice Girls comeback, global warming tops the list of teenage worries.

A recent poll of 50,000 teenagers from 18 countries found that, even though many can not name the cause of the problem, today's teens believe global warming is a serious issue. (Except in North America, where one quarter of those polled aren't sure it's a concern.) For the majority, however, global warming won teen hearts over drugs, violence, and war.

Our future still looks a bit bleak. A staggering 20 percent of teens polled don't know what causes global warming, or how to prevent it.

The results of the poll, conducted by Greepeace and virtual teen world Habbo, were released today as governments meet in Bali, Indonesia, for a UN conference on climate change.

• Two-thirds of teens polled believed that global warming will affect them in a negative way during their lifetime, though 64 percent believed it's still possible to stop global warming.

• 33 percent of survey respondents said their government is 'very concerned' about climate change compared to 42 percent who believed their government is 'very concerned' about terrorism.

• 39 percent of teens from around the world blaming North America as being responsible for the majority of greenhouse gases, followed by Europe (24 percent) and Asia (19 percent).