I believe that the climate may be changing, but as another poster said it's probably not related to humans, and if it is it's to a small degree of maybe 1%.
Read this site closely, look at the chart closely: Climate History
It appears, as is well known in the scientific community that the earth goes through cycles, and yet now their pushing that all aside. It's also been well known for years that the sun goes through cycles and the chart shows that and what happens when it does.
And what's really weird, the scientists are so scared of a warming trend that it borders on the nut scale. What happens when the earth warms up? We have mass plant growth at astonishing rates, rates so high that dinosaurs had more then enough food to eat, and would eat by travelling in a large circle so that by the time they came around where they started the plants would all be back; but when it cooled down the plants life cycles shorten when the dinosaurs came around there were no plants to eat so they eventually died off from a shortage of food. Vietnam is a small scale example of what the earth was like in tropic times. In Vietnam the US military would spray agent orange down on the vegetation to kill the plants so the enemy couldn't hide before they approached a fire base. Within 30 days of the application all the plants would be back to their previous heights and the military had to reapply the agent orange. It was a constant battle against foliage. You would think that this kind of climate would be a boon for feeding a massive human population, so why aren't the scientists seeing this?