"why don't the people get rid of the lizards?" said Arthur Dent. Well it seems the people are doing very well at getting rid of the lizards, due to climate change. Yep, it is our carbon emissions which is driving up global mean temperatures, altering the climate and driving lizards, Koalas and other species to extinction. The quote from Arthur Dent comes from Douglas Adams explaining the concept of democracy in the Hitchhikers Guide to the Galaxy.
Unfortunately, it seems we are getting rid of the wrong lizards - the ones with four feet that eat insects and are important prey for other small carnivores. That just leaves the cold-blooded political Lizards we have elected to office, still in charge and warming themselves in the glow from the fossil fuel vested interests.