AP - Two centuries after the dawn of the industrial age, the world on Wednesday takes its first concerted step to roll back the emission of "greenhouse gases" believed linked to climate change with the enactment of the Kyoto global warming pact.{br}{br}View the Entire Article (http://us.rd.yahoo.com/dailynews/rss/science/*http://story.news.yahoo.com/news?tmpl=story2&u=/ap/20050215/ap_on_sc/kyoto_protocol){br}