Every single computer model that is being used to warn us of the horrors of Global Warming has been shown to be incorrect.
While that doesn't mean that the activities of humanity aren't contributing to the climate it does mean that we have no proof that humanity is doing anything bad.
Yet liberals and environmental alarmists are ignoring science like the Luddites that most liberals are and demanding massive tax increases, huge amounts of regulation, and even more government micromanagement of every aspect of our lives to fight a problem which science doesn't even know exists.
Liberalism is based on lies. The lie about Global Warming is just one of many that liberals use to achieve their objective of control over the lives of everyone.