The term "global warming" refers to the global average temperature rising, which does not imply that the local temperature everywhere has to rise. The increase over the past century or so is somewhere around 0.7 °C - barely noticable, you'd think if you hadn't bothered to read anything about the subject, but the higher (again, on average across the globe and the year) temperatures have complex effects on the complex system that is our planet's climate and weather (for example, I believe it's not quite as simple as Zooty suggested; although sea levels have been rising (slowly but detectably) and glaciers disappearing (alarmingly quickly in many cases), we're not in NO MORE ICE CAPS IN TEN YEARS mode quite yet and very likely won't be in our lifetimes, but very heavy rainfalls and the like have been getting more frequent and this fits with the predictions of the models). I think you really should bother to actually read about what The Hippies in their scientist disguises are deceitfully claiming is going on instead of just arguing based on what you think the term "global warming" should mean.