Golf legend Greg Norman says the "stupidity of humanity" is partly to blame for the deadly fires in his home country of Australia ... and he's demanding change before things get worse.
The 64-year-old Hall of Famer believes climate change is real and must be taken seriously -- and says officials from all over the world need to start implementing global policies "to prevent this from happening again."
"We see change. It's taking place," Norman said on "TMZ Live" ... "I see it on my ranch in Colorado where the seasons are getting later. It used to snow in the early part of September, now we don't get any snow until the middle of October."
"We're seeing this change take place and the stupidity of humanity ... Are we to blame to some degree? Yes. We ARE to blame to some degree. Are we to blame 100%? No, but whatever that degree is, let's fix the problem."
"We are heartbroken over the devastation these fires are causing all across our homeland," the players said in a joint statement.
"Our thoughts are with our families, friends and all of the people of Australia. We hope you feel our love and support and know that we will continue to bring awareness to this crisis globally and provide assistance in any way we can."