Highest mountain on Earth, Mt. Everest grows about 4 millimeters a year since two tectonic plates which collided millions of years ago to form the Himalayas, continue to press against each other. Earths highest waterfall is at Angel Falls in Venezuela which drops 3,212 feet (979 meters). Hottest place on earth is Azizia in Libya 136 degrees Fahrenheit (57.8 Celsius) and coldest was in Vostok, Antarctica -129 Fahrenheit (-89 Celsius). Pacific is the biggest ocean (32.6% of the Earth's surface). Interesting fact is that Amazon recently became longest river by a bit more than 100 meters. According to Guido Gelli (director of science at the Brazilian Institute of Geography and Statistics) "Today, we can consider the Amazon the longest river in the world". Amazon is 4,225 miles (6,800 kilometers) long and the Nile is 4,160 miles long (6,695 kilometers).