A Scary Future for Humankind?: Crystal Ball Gazing? What Have We Done? What Can We Do?

The future of our world seems to look scarier and scarier by the day.Very soon, serious effects of climate change will be upon us.Wars will break out everywhere.Nuclear weapons will be used, starting with the small tactical ones.Trade wars and tariff wars will seriously damage the USA and the world.What are we to do about this very scary future?