Is climate change a Hoax?

 People deny that humans are the cause of the climate change today . I disagree i think humans are the cause of climate change today . I did research and according to this website http://goo.gl/bdcb32 there was information on how humans are the cause of global warming today . This is one way they explained how humans are the cause."Most climate scientists agree the main cause of the current global warming trend is human expansion of the "greenhouse effect warming that results when the atmosphere traps heat radiating from Earth toward space".