What is the coldest temperature ever recorded on Earth?

The Amazon River discharges more water than any other river on Earth. Approximately what percentage of all river water flowing into the world's oceans does it account for?

Which country in the world has the longest coastline?

What is the deepest lake in the world?

Which city has the largest metropolitan population in the world?

The Sahara is the world's largest hot desert. Approximately how large is it?

Lake Titicaca is the world's highest navigable lake. It lies on the border between which two countries?

Angel Falls in Venezuela is the world's highest uninterrupted waterfall. Approximately how tall is it?

Which famous continuously erupting volcano is located in the Aeolian Islands off the north coast of Sicily?

What is the largest island in the world?