5 ways the world will look dramatically different in 2100 ...

ANA SWANSON, THE WASHINGTON POST:

"Think the world is crowded now? You haven’t seen anything yet.

"The world is expected to add another billion people within the next 15 years, bringing the total global population from 7.3 billion in mid-2015 to 8.5 billion in 2030, 9.7 billion in 2050, and 11.2 billion by 2100, according to new estimates from the UN.

"Currently, 60 percent of the global population lives in Asia, 16 percent in Africa, 10 percent in Europe, 9 percent in Latin America and the Caribbean, and only 5 percent in North America and Oceania. China and India are the largest countries in the world, together making up almost 40 percent of the world population.

"But those numbers won’t stay that way for long."

Read more, here.