Shrinking humans like they do in 'Downsizing' is actually somewhat possible — and not such a bad idea. The movie "Downsizing" imagines a world where a small percentage of the population elects to shrink themselves to 5 inches tall. In the downsized world, people are richer, and their environmental footprint is smaller.

Is it possible for humans to shrink?

In fact, we can begin shrinking as early as our 30s, according to some research. Men can gradually lose an inch between the ages of 30 to 70, and women can lose about two inches. After the age of 80, it's possible for both men and women to lose another inch.

Would a shrink ray be possible?

MIT researchers have created a real life 'shrink ray' that can reduce 3D structures to one thousandth of their original size. Scientists can put all kinds of useful materials in the polymer before they shrink it, including metals, quantum dots, and DNA.