According to a Harvard study, the earth's population will hit seven billion humans in a few months.

India's population is estimated at more than 1.2 billion and is growing at about 1.55 per cent a year. The world's 10th largest economy with GDP close to $2 trillion, India is a giant that is relentlessly moving forward, although not fast enough for many of its poor sections.

India will soon overtake China as the most populous nation on earth. However, it does appear that this could be India's millennium if it plays its cards right.

Be that as it may, there are some countries that have more animals than human beings.

Here we profile 10 countries that have less than 10 people per square mile. By comparison, India has over 960 people per square mile.

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1. Greenland

Location: North Atlantic

Population: 56,615

People per square mile: .069 humans per square mile

Primary Airport: Kangerlussuaq Airport

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2. Falkland Islands

Location: South Atlantic Ocean

Population: 3,140

People per square mile: .65 humans per square mile

Primary Airport: RAF Mount Pleasant

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3. Mongolia

Location: Central Asia

Population: 2,754,685

People per square mile: 4.56 humans per square mile

Primary Airport: Chinggis Khaan International Airport (Chinggis Khaan is the Mongolian name for Genghis Khan).

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4. Western Sahara

Location: Northwest Africa

Population: 513,000

People per square mile: 5 per square mile

Primary Airport: Hassan I Airport

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5. French Guiana

Location: Northeast South America

Population: 217,000

People per square mile: 6.2 humans per square mile

Primary Airport: Cayenne - Rochambeau Airport

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6. Namibia

Location: Southern Africa

Population: 2,108,655

Population density: 6.6 humans per square mile

Primary Airport: Windhoek Hosea Kutako International Airport

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7. Australia

Location: South Indian and Pacific Oceans

Population: 22,672,063

Population density: 7.3 humans per square mile

Primary Airport: Kingsford Smith Airport (Sydney)

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8. Iceland

Location: North Atlantic Ocean

Population: 318,452

Population density: 7.5 humans per square mile

Primary Airport: Keflav k International Airport

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9. Suriname

Location: Northeast South America

Population: 491,989

Population density: 7.6 humans per square mile

Primary Airport: The Johan Adolf Pengel International Airport

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10. Mauritania

Location: Northwest Africa

Population: 3,069,000

Population density: 8.2 humans per square mile

Primary Airport: Nouakchott International Airport.