The Day the Earth Stood Still (2008) (2008)

In "The Day the Earth Stood Still" (2008), Klaatu, an alien envoy from a civilization that underwent severe evolution to endure its own environmental crises, arrives on Earth with a crucial mission. He aims to evaluate humanity's ability to reverse the ecological harm they have caused. However, after being denied access to the United Nations, Klaatu concludes that humanity poses a threat to the planet's survival and opts for extermination as a solution to protect Earth’s future.