What's the oldest city in the world?
Jericho - Palestine
What's the largest country in the world?
Russia
What's the tallest mountain in the world?
Everest
What's the longest river in the world?
Nilo River
What's the coldest place on Earth?
East Antarctica (near to South Pole)
What's the most expensive city on Earth?
Hong Kong (together with Paris and Osaka)
What's the largest city on Earth?
Tokyo
What's the longest river in BRAZIL?
Amazonas River
What's the dirtiest (most polluted) country on Earth?
India
What's the cleanest country on Earth?
Iceland
What's the most polluted state in BRAZIL?
Rio Grande do Sul
