It changes every minute, varies from year to year, decade to decade ... It's cyclical. For thousands of years what was lush green forests has grown into deserts that are expanding. Tempurature has increased by 1 degree in the last 150 years. From 1400 to 1850 they had a -3 degree dip (called the little ice age). But actually in the last 20 years there has been a cooling.
The basic Left Wing agenda disguised as the "Global Warming/Climate Change hoax is A One World Order/ Global Governance. What they must do is destroy the sovereignty of every nation (and this already started with the EU - which btw is not working too well). The USA is the biggest challenge. They must collapse the economy, by redistribution of wealth, socialism, dismantling capitalism and distorting our history, dishonoring our nation that has been blessed and guided from the beginnings by God. This generation has seen the effects of liberalism, destroying its greatness: abortion, gay marriage, welfare system, a massive debt and an ugly division fueled by racism.
The click is ticking. Unfortunately this movement won't stop. Trump may delay it and we see a great economy now, but I think the USA has seen its better days - this generation is all screwed up, we have become callous to immorality/sin on many levels.
I pray for the Lord to return soon - because we are going in the wrong direction and cannot fix the world.