I think it is so stupid of people to do bad things to the earth that they are living on! I can't understand why they are doing these. People should care about the environment.

我认为人类在破坏他们赖以生存的地球是愚蠢的！我不明白他们为什么这么做。人类应该关心环境。

youdao

People and living things can live on the earth.

人和生物可以在地球上生存。

youdao

By 2050 there will be too many people on the earth and over 100 million people will be living on the moon and other planets.

到2050年，地球上将人口过多，超过1亿人将生活在月球和其他行星上。

youdao

He said the Earth is like a large mechanical device that will survive only if people living on it know how to operate it correctly.

VOA: special.2010.05.30

"With only a small variation in fertility, particularly in the more populous countries, the total could be higher: 10.6 billion people could be living on Earth by 2050 and more than 15 billion in 2100, " says the Population Division of the U.N.

CNN: U.N.: World can 'thrive' as population reaches 7 billion

The people, except for some Lebanese tin traders, have returned to scratching a living from the earth.

ECONOMIST: Life in Congo: War and peace | The