Earth unit (EU): A Natural Unit for Surface Area on the Earth

The fact is that area units used by the media are useless since they do NOT allow one to understand the large amounts of area being discussed. For example, the 2019--2020 Australian bushfire season burnt an estimated 18.6 million hectares (ha) (46 million acres; 186,000 square kilometers; 72,000 square miles, approxomately 40 million American football fields). But how much of Australia burnt compared to Australia or the whole world?

One needs a natural unit for large areas. Since the total surface area of the Earth is 510.072 million square kilometers, yours truly modestly proposes:
The Earth unit (EU):

    1 EU  = 10**6 km**2 = (10**3 km)**2 = 10**8 ha --- 510 EU make up the Earth!!!!
          = 100 cEU (centiEU)
          ≅ 0.002 = = 2/1000 = 0.2 % of the Earth's surface
    1 cEU = 0.01 EU = 10**4 km**2 = (10**2 km)**2 = 10**6 ha  
          = 100 pcEU (percent-cEU)
   1 pcEU = 0.01 cEU = 100 km**2 = (10 km)**2 = 10**4 ha
  1 km**2 = 0.01 pcEU = 100 ha
     1 ha = 0.01 km**2 = 10**4 m**2 = (100 m)**2
   1 acre = 0.404 685 642 24 ha (exact) ≅ 0.4 ha = ≅ 0.5 ha
    

1. bodies of water:
   1. Aegean Sea: 21.4 cEU.
   2. Lake Erie: 2.5667 cEU.
   3. Pacific Ocean: 165.250 EU ≅ (1/3) of Earth's 510.072 EU.
   4. Wadden Sea: ∼ 1 cEU.
   5. World Ocean: 361 EU. So total land area is <∼ 149 EU.
2. continents, subcontinents:
   1. Antarctica: 14.2 EU.
   2. Europe: 10.180 EU.
   3. North America: 24.709 EU.
   4. Eurasia: 55 EU.
3. countries provinces, territories, etc.:
   1. Australia: 7.692024 EU.
   2. Bermuda: 0.532 pcEU = 53.2 km**2.
   3. Canada: 9.984670 EU ≅ 10 EU. Includes water area.
   4. China: 9.596961 EU. Excludes disputed areas.
   5. Ecuador: 0.0283561 EU = 2.83561 cEU.
   6. Ireland: 0.084421 EU = 8.4421 cEU ≅ 0.1 EU.
   7. Monaco: 2.2 km**2 = 220 ha.
   8. Nauru: 0.21 pcEU = 21 km**2.
   9. Russia: 17.098246 EU.
   10. United States of America (USA): 9.833517 EU. Includes water area.
4. forests, forest areas:
   1. Amazon rainforest: 5.5 EU = 550 cEU.
   2. Borneo: 0.743330 EU = 74.3330 cEU.
   3. Congo Basin: 3.7 EU = 370 cEU.
5. islands:
   1. Aran Islands: 0.46 pcEU = 46 km**2.
   2. Bermuda: 0.532 pcEU = 53.2 km**2.
   3. Clipperton Island: 0.06 pcEU = 6 km**2.
   4. Corfu (Corcyra): 6.109 pcEU = 610.9 km**2.
   5. Greenland: 2.166086 EU.
   6. Elba: 2.24 pcEU = 224 km**2.
   7. Hawai'i (the Big Island): 40.28 pcEU = 4023 km**2.
   8. Isle of Wight: 3.84 pcEU = 384 km**2.
   9. Ithaca: 0.96 pcEU = 96 km**2.
   10. Key West: 0.11 pcEU = 11 km**2.
   11. Middle Island: 18.5*10**(-4) pcEU = 0.185 km**2 = 18.5 ha.
   12. Mont-Saint-Michel: 0.0097 pcEU = 0.97 km **2.
   13. Monte Cristo: 0.1039 pcEU = 10.93 km**2.
   14. Pelee Island: 0.4179 pcEU = 41.79 km**2.
   15. Prince Edward Island: 56.60 pcEU = 5660 km**2.
   16. The Island: ∼ 0.01 pcEU = 1 km**2. Located in Port Colborne, Ontario, The Island is NOT officially an island and has NO official name. It just is one and has the other. See The Island, Port Colborne, Ontario: google map which suggests it's about 1 km**2 in area.
   17. Santorini (Thera): 0.9069 pcEU = 90.69 km**2.
   18. Surtsey: 0.014 pcEU = 1.4 km**2.
   19. Vulcano: 0.21 pcEU = 21 km**2.
   20. Zanzibar (Unguja): 16.66 pcEU = 1666 km**2.
6. planets, moons, asteroids, etc.:
   1. Earth: 510.072 EU.
   2. Moon: 37.93 EU ≅ 0.074 of Earth's surface.

The Earth unit (EU): "It's all my own invention."

So how much of Australia burnt in the 2019--2020 Australian bushfire season? An estimated 18.6 cEU.

Credit/Permission: Central Intelligence Agency (CIA), 2004 (uploaded to Wikimedia Commons by User:AEvar Arnfjoerd Bjarmasona, 2005) / Public domain.
Image link: Wikimedia Commons: File:Physical World Map 2004-04-01.jpeg.
Local file: local link: map_world_physical_EU.html.
File: Maps file: map_world_physical_EU.html.