It is possible to grow food underground if you have a power source

Once again if you return to the underground living concept that I illustrated with Cheyenne Mountain in Colorado Springs, Colorado, it is possible to have underwater lakes and run power both through solar, wind or even geothermal or I suppose you could also use hydrogen fuel cells powered by the hydrogen from even water from an underground lake.

So, even when winds are 100 mph or more in a more constant way they will be approximately 100 years from now many places on earth it still will be possible to grow food underground even when it is impossible because all the leaves of everything you grow would blow away in the winds and the plants would die on the surface of the earth many many places. Also, high temperatures will be a problem on the surface of the earth where it wouldn't be now.

The biggest single problem farmers likely are having now worldwide is droughts and floods but in the future high winds will be an extreme problem for everyone blowing both wooden homes away but also trees, shrubs and plants we grow to eat and feed farm animals.

So, developing power sources now will enable some humans to survive this worldwide over time by living underground and farming underground in the future.

We are likely right now at a peak amount of humans that there will ever be on earth. It can only begin to reduce from starvation from now on.

This is true for a variety of reasons. The present overpopulation is causing global warming. Global Warming reduces tillable land in various ways.

All you have to look at is to realize both the war in Syria and the war in Afghanistan's primary causes were droughts to understand a lot of this.

For example, droughts in Afghanistan made it impossible to grow wheat and other crops. Then the Taliban said they would protect opium growers right to grow opium which was keeping farmers alive since they could not grow wheat and other plants because of the drought. This tended to put farmers on the side of the Taliban if they didn't want their families to starve during the drought.

It was somewhat the same in Syria. The drought in Syria brought many young men who were unemployed by the drought by closing down farms into the cities. These young men had no jobs and were starving and so were paid to be Al Qaeda and ISIS fighters so this was a way to stay alive (possible at least for a few years) by being a paid terrorist. So, otherwise, who would choose a life as a terrorist unless they had no other choices in life as ways to stay alive?

So, the number 1 security threat to the world in regard to terrorism is global Warming caused by overpopulation resulting in Droughts especially in the more arid parts of the world like Syria and Afghanistan which results in Trillions of dollars spent by the U.S. and Europe trying to keep terrorism out of their countries in an attempt to stabilize their governments ongoing.