As a precognitive intuitive I can see the biggest problem on earth is Starvation this century

 What is the main cause of Starvation on earth this century?

I would say the main cause is overpopulation combined with Global Climate changes working together to prevent crops from growing right which then makes food cost so much that many Up to 50% of the people on earth starve (especially between now and 2050). After this things change in ways I don't fully understand because I'm not from that era.

However, what appears to happen is that more people are living underground and even growing food underground with solar powered Grow lights and water piped in from various sources to grow food underground all of the world. Why?

Because I think two things make people move underground.

1. Drones attacking from above like the Shahed Suicide Drones now only $35,000.

And 

2. Winds over 100 miles per hour even one day a year can blow all trees and plants away especially as they reach 200 miles per hour gusts and more. And this likely is already happening at least one day a year many places on earth.

So, people will tend to move underground first into bomb shelters like they do in Israel already and the second reason is just global Climate changes forcing people to move underground.

and 

3. it might get too hot to live above ground many places during the day so people will only want to be above the surface of the land at night when it's cooler. I think this is a much bigger factor than people presently realize on earth. as of now.

SO, THE ONES WHO SURVIVE PAST 2050 AND DON'T STARVE TO DEATH WILL TEND TO START MOVING UNDERGROUND TO SURVIVE THE HEAT AND WINDS AND DRONES FALLING EVERYWHERE BECAUSE OF THE CHEAP VERSION OF THINGS LIKE THE SHAHED SUICIDE DRONES FALLING AND BLOWING UP THINGS ALL OVER THE EARTH.

SO, THE ONLY WAY TO STAY ALIVE MIGHT BE TO STAY UNDERGROUND AS MUCH AS POSSIBLE SO YOU DON'T DIE FROM ONE OF THESE THINGS.

SO, GOOD LUCK WITH ALL OF THIS.

I THINK IT'S TIME WE ALL STARTED PREPARING FOR THIS KIND OF FUTURE IF WE WANT OUR CHILDREN AND THEIR CHILDREN TO SURVIVE THIS CENTURY.

BY GOD'S GRACE