1) The world's tallest waterfall is Angel Falls in Venezuela, with a height of about 3,212 feet (979 meters).

2) The insurance industry plays a crucial role in risk management by providing financial protection against various risks, such as accidents, natural disasters, and liability claims.

3) The world's largest volcano, Mauna Loa in Hawaii, is also one of the most active.

4) The Great Wall of China is not visible from space without aid, contrary to popular belief.