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While investigating facts about Square Km, I found out little known, but curios details like:

Before Chernobyl, the Soviets had another massive nuclear disaster which contaminated over 20,000 square km. The area was turned into a preserve to cover up the accident. The CIA knew of the accident, but also covered it up in order to protect the fledgling US nuclear industry from hysteria.

The Soviets had another massive nuclear disaster before Chernobyl which contaminated up to 20,000 square km of land. Despite their attempts to hide the incident the CIA knew all about it, but they also covered it up to prevent the growing US nuclear industry from panicking.

In my opinion, it is useful to put together a list of the most interesting details from trusted sources that I've come across. Here are 37 of the best facts about Square Km I managed to collect.

  1. The papal density of Vatican City is 2.27 popes per square km

  2. China has planted over 500 thousand square kilometers of forest since 1978 to combat the expansion of the Gobi Desert making it the largest forest plantation in the world. It’s expected to reach 4,500 km by 2050

  3. There was once a city within the city of Hong Kong that was largely ungoverned and had a population density of 1,255,000 people per square km.

  4. In the US west of Washington DC there's a National Radio Quiet Zone - 13,000 square miles (34,000 sq km) of radio silence where cellphones are banned

  5. Traditional forest management used a sustainable method of wood harvesting called "coppicing" that would involve cutting a young tree to the stump, and harvesting the shoots in 7-20 years. One square km of coppiced land used produces enough heat for 100 homes a year.

  6. Jeffrey Lee, The Last Survivor Of The Djok Clan, Refused A Offer Of His 19,000 square km, Uranium Filled Land In North Territory AU, For 5 Billion Dollars But Instead Made It A Nation Park Protected By The Biodiversity Conservation Act 1999

  7. The Kara Sea is part of the Great Arctic State Nature Reserve, established in 1993. This reserve is the largest of its kind in Russia and includes the Kara Sea islands section of 4,000 square KM.

  8. The youngest desert in the world is the Aralkum Desert in Uzbekistan, which is less than 50 years old and 45,000 square km's in size. It formed because of manmade disturbances to the region. It is the world's most toxic desert due to run-off from five countries in Asia and Afghanistan.

  9. The USA owns a 0.012 square km island in the middle of the Pacific Ocean called Kingman Reef

  10. Puerto Rico covers 8,959 square km of land and 145 square km of water in its boundaries.

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Square Km data charts

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square km fact data chart about Global tree density per square km, labelled by number of tre
Global tree density per square km, labelled by number of trees per country (in billions)

square km fact data chart about To those asking why traffic in Jakarta/Jabodetabek is nreaki
To those asking why traffic in Jakarta/Jabodetabek is nreakin' futs? Vehicle/1000 people: Japan: 591, Indonesia 68: Tokyo +-250, Jakarta 368. Both city area +-600 square km. Source

What is true about square km?

You can easily fact check it by examining the linked well-known sources.

Canada's Carcross Desert is only 1 square mile (2.6 km square), making it the smallest desert in the world

The maximum daily ozone hole size in 2017 was recorded as the smallest it has been in 29 years. The last time it was smaller than it was in 2017 was in 1988 with an area of 13.8 million km squared. - source

In 1989, the height of the Japanese real estate boom, the 3.41 square km land containing the Imperial Palace in Tokyo was estimated to be worth more than all the combined real estate in California - source

Scientists warn, 99% of seabirds will have swallowed plastic by 2050.Some studies have shown plastic pollution can amount to 580,000 pieces of plastic per square km in the ocean."With the plastics problem, you're really just asking people to dispose of plastics more responsibly."

The Vatican City, not only has the highest crime rate in the world, but it also has 2.27 Pope's per square km (5.88 pope's per square mile) - source

The nation of Monaco, a country with an area of only 2 square kilometers, has 77 km of roadway.

The Sahara desert ( dust ) helped build The Bahamas by persistent winds blown across Africa's 3.5-million square mile and travel nearly 5,000 mile (8,000 km) north west journey towards the U.S. and Caribbean

When Pioneer 10 and 11 were more than 8 billion miles (13 billion km) from the sun, a team of researchers calculated that the spacecraft were declerating at a rate of about 300 inches per day squared (0.9 nanometers per second squared).

There is a 2,060 square km area of land between Sudan and Egypt which is not claimed by any nation

Vienna's central cemetery has its own bus line, as it spreads over 2.4 square km

If everyone on Earth (all 7+ billion people) stood side by side and in front and back, with each having a square meter to stand in (more than enough room for each), the box of people would only take up 7200 square km (2780 square miles). You could jog around that in around 24 hours.

Interesting facts about square km

There are more people living in Grand Rapids, Michigan (192,294 in 117.2 square km) than in all of the Yukon, Northwest Territories, and Nunavut combined (107,265 in 3,921,739 square km).

Vatican City is the smallest country in the world at .44 square km (for perspective: which is about one-eighth the size of NYC's Central Park).

The City of London itself has only 7,375 inhabitants and an area of 1.12 square miles (2.9 sq km)

There 173,371 bunkers in Albania. An average of 5.7 per square km.

India has a plan to build a city 6 times the size of Shanghai by 2025, from scratch. The total area of the project would be 920 square km (227,336 acres) which is equivalent to 10.9 times the area of Manhattan.

There is a 7 square km country called Liberland which was founded in 2015

England has the worlds largest offshore wind farm. It's 87 turbines span the size of 20,000 football pitches (approx 145 square km). It is anticipated that the wind farm will generate enough electricity to power around 600,000 homes.

The Armillaria solidipes, a species of mushroom of which one specimen was found in Oregon that had been growing for some 2,400 years, covering 3.4 square miles (8.4 km). It is considered one of the largest living organisms and was nicknamed the "Humongous Fungus"

The largest "state" in the world is the Sakha Republic in Russia. At over 3 million square km it is bigger than Argentina, the 8th largest country.

Toronto holds the Guinness World Record for the largest underground shopping complex with 30 km (19 miles) of shopping arcades. At 371,600 square metres (4 million square feet) of retail space, PATH rivals the West Edmonton Mall in size.

There is a community in Ontario called Redditt... it's 69 square km. lol.

Denmark is technically the second biggest country in Europe at (2,210,400 square km²) after Russia (17,178,310 km²) - and the largest country in the EU, as it owns Greenland.

The Sahara Desert at 9.2 million square KM is the size of the U.S. or China - interestingly, every 41,000 years it alternates between desert & grassland

This is our collection of basic interesting facts about Square Km. The fact lists are intended for research in school, for college students or just to feed your brain with new realities. Possible use cases are in quizzes, differences, riddles, homework facts legend, cover facts, and many more. Whatever your case, learn the truth of the matter why is Square Km so important!

Editor Veselin Nedev Editor