photo credit: Aerospace Corporation

China's falling space station highlights the problem of space junk crashing to Earth

By some estimates, the amount of space junk is in the hundreds-of-thousands to millions of pieces and this interactive illustration shows some of them.
[...]
Electro-Optic Systems (EOS) and Mount Stromlo Observatory are part of the Space Environment Research Centre (SERC) which is planning to build a laser system capable of safely de-orbiting [!] small bits of space junk

You'd be surprised how often space junk falls out of the sky
"A rocket booster from the recently launched Cygnus spacecraft fell back down to Earth over Saskatchewan, creating a spectacular plume of light in its wake."
China Space Lab Mostly Burns Up on Re-Entry in South Pacific
"The lack of control was not unusual given that about 15 percent of satellites re-enter the atmosphere prior to the end of their useful lives, [Brad Tucker, astrophysicist] said."

Diversity is the key to economic and political evolution.