Even small changes can move an ecosystem e.g. change altitude at which a plant thrives; change depth at which ocean life survives. Coffee plants are currently m

Even small changes can move an ecosystem e.g. change altitude at which a plant thrives; change depth at which ocean life survives. Coffee plants are currently moving - the traditional mountain fields are no longer optimal so planting has to be done elsewhere. Reefs of course are dying/dead and regrowing in deeper water. Who cares? Folks who depend on food from these ecosystems. They have to eat every day/year. They cannot wait for reefs to regrow in 100 years, etc. We can probably react. But will we? We let Cambodian people die in the '70s rather that lift a finger. Our track record is very poor. Hard to care about people dying halfway around the world. But politics is very affected. The Cambodian famine created the Khmer Rouge for instance. Imagine refugees from starving countries, looking to settle elsewhere. First thousands, then hundreds of thousands, then millions, then hundreds of millions. The outcry from 1000's of Syrian refugees rocked nations. Now multiply that by 100 thousand.