>>1771372>>1771364Neither are scams, though some people scam others about the implications.
Global warming is an observed phenomenon and something that, based on the laws of physics, we should expect when we change the composition of the planet's atmosphere.
Peak Oil (or at least Peak Conventional Oil) occurred in the USA around the time the original predictions said it would. But many factors (first foreign oil, then shale oil, then EVs) have prevented it from being the serious problem that some people thought it would be.