Because the Chinese government (Mao) refused to acknowledge that it was happening. He surrounded himself with yes men so probably did not even know himself until it was too late.

China has many barriers preventing other countries from doing business in China. Time to give them the same treatment!

The atmosphere causes almost all meteorites to burn up before hitting the surface, I imagine that the same holds for space debris. So the concern about space debris hitting your house seems to be more about drawing attention to the very real problem of space debris to orbiting satellites.

One degree change in the last 100 years. The earth temperature increased by one degree from about 9750bc to 9000bc as well, but in a period 7 times as long!

What’s the 40-60 ratio?