1. Amazon Rainforest (Brazil, Peru, Bolivia, Ecuador, Venezuela, Colombia, Guyana, Suriname, French Guiana)

- Largest rainforest in the world

- Covers over 5.5 million square kilometers (2.1 million square miles)

- Home to an estimated 10% of the world's known species

2. Congo Rainforest (Democratic Republic of the Congo, Gabon, Cameroon, Central African Republic, Republic of the Congo)

- Second largest rainforest in the world

- Covers over 2 million square kilometers (0.8 million square miles)

- Home to an estimated 10% of the world's known species

3. Borneo Rainforest (Indonesia, Malaysia, Brunei)

- Third largest rainforest in the world

- Covers over 1.4 million square kilometers (0.55 million square miles)

- Home to an estimated 7% of the world's known species

4. New Guinea Rainforest (Indonesia, Papua New Guinea)

- Fourth largest rainforest in the world

- Covers over 785,000 square kilometers (303,000 square miles)

- Home to an estimated 5% of the world's known species

5. Sumatra Rainforest (Indonesia)

- Fifth largest rainforest in the world

- Covers over 473,000 square kilometers (183,000 square miles)

- Home to an estimated 5% of the world's known species