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The World’s 25 Largest Lakes, Side by Side

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The World's 25 Largest Lakes, Side by Side

The World’s 25 Largest Lakes, Side by Side

In many parts of the world, you don’t have to look very far to find a lake.

According to satellite data, there are roughly 100 million lakes larger than one hectare (2.47 acres) to be found globally. The largest lakes, which rival the size of entire nations, are more of a rarity.

One might expect the world’s largest lakes to be very alike, but from depth to saline content, their properties can be quite different. As well, the ranking of the world’s largest lakes is far from static, as human activity can turn a massive body of water into a desert within a single generation.

Today’s graphic – created using the fantastic online tool, Slap It On A Map! – uses the Great Lakes region as a point of comparison for the largest 25 lakes, by area. This is particularly useful in comparing the scale of lakes that are located in disparate parts of the globe.

The Greatest Lakes

The largest lake in the world by a long shot is the Caspian Sea – a name that hints at a past when it was contiguous with the ocean around 11 million years ago. This massive saline lake, which is nearly the same size as Japan, borders five countries: Kazakhstan, Russia, Turkmenistan, Azerbaijan, and Iran. An estimated 48 billion barrels of oil lay beneath the surface of the basin.

The five Great Lakes, which run along the Canada–U.S. border, form one of the largest collections of fresh water on Earth. This interconnected series of lakes represents around 20% of the world’s fresh water and the region supports over 100 million people, roughly equal to one-third of the Canada–U.S. population.

Amazingly, a single lake holds as much fresh water as all the Great Lakes combined – Lake Baikal. This rift lake in Siberia has a maximum depth of 5,371ft (1,637m). For comparison, the largest of the Great Lakes (Lake Superior) is only 25% as deep, with a maximum depth of 1,333ft (406m). Lake Baikal is unique in a number of other ways too. It is the world’s oldest, coldest lake, and around 80% of its animal species are endemic (not found anywhere else).

Here’s a full run-down of the top 25 lakes by area:

RankLake NameSurface AreaTypeCountries on shoreline
1Caspian Sea143,000 sq mi
(371,000km²)
Saline🇰🇿 Kazakhstan
🇷🇺 Russia
🇹🇲 Turkmenistan
🇦🇿 Azerbaijan
🇮🇷 Iran
2Superior31,700 sq mi
(82,100km²)
Freshwater🇨🇦 Canada
🇺🇸 U.S.
3Victoria26,590 sq mi
(68,870km²)
Freshwater🇺🇬 Uganda
🇰🇪 Kenya
🇹🇿 Tanzania
4Huron23,000 sq mi
(59,600km²)
Freshwater🇨🇦 Canada
🇺🇸 U.S.
5Michigan22,000 sq mi
(58,000km²)
Freshwater🇺🇸 U.S.
6Tanganyika12,600 sq mi
(32,600km²)
Freshwater🇧🇮 Burundi
🇹🇿 Tanzania
🇿🇲 Zambia
🇨🇩 D.R.C.
7Baikal12,200 sq mi
(31,500km²)
Freshwater🇷🇺 Russia
8Great Bear Lake12,000 sq mi
(31,000km²)
Freshwater🇨🇦 Canada
9Malawi11,400 sq mi
(29,500km²)
Freshwater🇲🇼 Malawi
🇲🇿 Mozambique
🇹🇿 Tanzania
10Great Slave Lake10,000 sq mi
(27,000km²)
Freshwater🇨🇦 Canada
11Erie9,900 sq mi
(25,700km²)
Freshwater🇨🇦 Canada
🇺🇸 U.S.
12Winnipeg9,465 sq mi
(24,514km²)
Freshwater🇨🇦 Canada
13Ontario7,320 sq mi
(18,960km²)
Freshwater🇨🇦 Canada
🇺🇸 U.S.
14Ladoga7,000 sq mi
(18,130km²)
Freshwater🇷🇺 Russia
15Balkhash6,300 sq mi
(16,400km²)
Saline🇰🇿 Kazakhstan
16Vostok4,800 sq mi
(12,500km²)
Freshwater🇦🇶 Antarctica
17Onega3,700 sq mi
(9,700km²)
Freshwater🇷🇺 Russia
18Titicaca3,232 sq mi
(8,372km²)
Freshwater🇧🇴 Bolivia
🇵🇪 Peru
19Nicaragua3,191 sq mi
(8,264km²)
Freshwater🇳🇮 Nicaragua
20Athabasca3,030 sq mi
(7,850km²)
Freshwater🇨🇦 Canada
21Taymyr2,700 sq mi
(6,990km²)
Freshwater🇷🇺 Russia
22Turkana2,473 sq mi
(6,405km²)
Saline🇰🇪 Kenya
🇪🇹 Ethiopia
23Reindeer Lake2,440 sq mi
(6,330km²)
Freshwater🇨🇦 Canada
24Issyk-Kul2,400 sq mi
(6,200km²)
Saline🇰🇬 Kyrgyzstan
25Urmia2,317 sq mi
(6,001km²)
Saline🇮🇷 Iran

Shrinking out of the rankings

Not far from the world’s largest lake, straddling the border between Kazakhstan and Uzbekistan, lay the sand dunes of the Aralkum Desert. In the not so distant past, this harsh environment was actually the bed of one of the largest lakes in the world – the Aral Sea.

Aral Sea receding 1960 2020

For reasons both climatic and anthropogenic, the Aral Sea began receding in the 1960s. This dramatic change in surface area took the Aral Sea from the fourth largest lake on Earth to not even ranking in the top 50. Researchers note that the size of the lake has fluctuated a lot over history, but through the lens of modern history these recent changes happened rapidly, leaving local economies devastated and former shoreside towns landlocked.

Lake Chad, in Saharan Africa, and Lake Urmia, in Iran, both face similar challenges, shrinking dramatically in recent decades.

How we work to reverse damage and avoid ecosystem collapse in vulnerable lakes will have a big influence on how the top 25 list may look in future years.

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Energy

Visualizing the Range of EVs on Major Highway Routes

We visualize how far popular EV models will take you on real-world routes between major cities, and which are the most cost effective.

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The Range of EVs on Major Highway Routes

Between growing concerns around climate change, new commuting behaviors due to COVID-19, and imminent policy changes, the global transition to electric vehicles (EVs) is well under way.

By the year 2040, sales of electric vehicles are projected to account for 58% of new car sales, up from just 2.7% currently.

But switching from a gasoline car to an electric one is not seamless. With charging and range capacities to consider, and the supporting infrastructure still being slowly rolled out in many parts of the world, understanding the realities of EV transportation is vital.

Above, we highlight 2020 all-electric vehicle range on well-recognized routes, from California’s I-5 in the U.S. to the A2 autobahn in Germany. The data on estimated ranges and costs are drawn from the U.S. EPA as well as directly from manufacturer websites.

The EV Breakdown: Tesla is King of Range

For many consumers, the most important aspect of an electric vehicle is how far they can travel on a single charge.

Whether it’s for long commutes or out-of-city trips, vehicles must meet a minimum threshold to be considered practical for many households. As the table below shows, Tesla’s well-known EVs are far-and-away the best option for long range drivers.

VehicleRange (miles)Range (km)MSRPCost per mile
Tesla Model S Long Range Plus402647$74,990$186.54
Tesla Model X Long Range Plus351565$79,990$227.89
Tesla Model S Performance348560$94,990$272.96
Tesla Model 3 Long Range322518$46,990$145.93
Tesla Model Y Long Range316509$49,990$158.20
Tesla Model X Performance305491$99,990$327.84
Tesla Model 3 LR Performance299481$54,990$183.91
Tesla Model Y Performance291468$59,990$206.15
Polestar 2275443$59,900$217.82
Chevrolet Bolt EV259417$36,620$141.39
Hyundai Kona Electric258415$37,190$144.15
Tesla Model 3 Standard Range Plus250402$37,990$151.96
Kia Niro EV239385$39,090$163.56
Jaguar I-PACE234377$69,850$298.50
Nissan LEAF e+ S226364$38,200$169.03
Audi e-tron Sportback218351$69,100$316.97
Nissan LEAF e+ SV/SL215346$39,750$184.88
Audi e-tron204328$65,900$323.04
Porsche Taycan 4S Perf Battery Plus203327$112,990$556.60
Porsche Taycan Turbo201323$153,510$763.73
Porsche Taycan Turbo S192309$187,610$977.14
Hyundai IONIQ Electric170274$33,045$194.38
BMW i3153246$44,450$290.52
Nissan LEAF149240$31,600$212.08
MINI Cooper SE110177$29,900$271.82
Fiat 500e84135$33,460$398.33

In an industry where innovation and efficiency are vital, Tesla’s first-mover advantage is evident. From the more affordable Model 3 to the more luxurious Model S, the top eight EVs with the longest ranges are all Tesla vehicles.

At 402 miles (647 km), the range of the number one vehicle (the Tesla Model S Long Range Plus) got 127 miles more per charge than the top non-Tesla vehicle, the Polestar 2—an EV made by Volvo’s standalone performance brand.

Closer Competition in Cost

Though Tesla leads on overall range and battery capacity, accounting for the price of each vehicle shows that cost-efficiency is far more competitive among brands.

By dividing the retail price by the maximum range of each vehicle, we can paint a clearer picture of efficiency. Leading the pack is the Chevrolet Bolt, which had a cost of $141.39/mile of range in 2020 while still placing in the top 10 for range with 259 miles (417 km).

Just behind in second place was the Hyundai Kona electric at $144.15/mile of range, followed by the Tesla Model 3—the most efficient of the automaker’s current lineup. Rounding out the top 10 are the Nissan LEAF and Tesla Model S, but the difference from number one to number ten was minimal, at just over $45/mile.

Top 10 All-Electric Vehicles by Cost Efficiency
VehicleCost per mile
Chevrolet Bolt EV$141.39
Hyundai Kona Electric$144.15
Tesla Model 3 Long Range$145.93
Tesla Model 3 Standard Range Plus$151.96
Tesla Model Y Long Range$158.20
Kia Niro EV$163.56
Nissan LEAF e+ S$169.03
Tesla Model 3 LR Performance$183.91
Nissan LEAF e+ SV/SL$184.88
Tesla Model S Long Range Plus$186.54

Higher Ranges and Lower Costs on the Horizon

The most important thing to consider, however, is that the EV industry is entering a critical stage.

On one hand, the push for electrification and innovation in EVs has driven battery capacity higher and costs significantly lower. As batteries account for the bulk of weight, cost, and performance in EVs, those dividends will pay out in longer ranges and greater efficiencies with newer models.

Equally important is the strengthening global push for electric vehicle adoption. In countries like Norway, EVs are already among the best selling cars on the market, while adoption rates in China and the U.S. are steadily climbing. This is also being impacted by policy decisions, such as California’s recent announcement that it would be banning the sale of gasoline cars by 2035.

Meanwhile, the only thing outpacing the growing network of Tesla superchargers is the company’s rising stock price. Not content to sit on the sidelines, competing automakers are rapidly trying to catch up. Nissan’s LEAF is just behind the Tesla Model 3 as the world’s second-best-selling EV, and Audi recently rolled out a supercharger network that can charge its cars from 0% to 80% at a faster rate than Tesla.

As the tidal wave of electric vehicle demand and adoption continues to pick up steam, consumers can expect increasing innovation to drive up ranges, decrease costs, and open up options.

Correction: A previous version of this graphic showed a European route that was the incorrect distance.

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Understanding How the Air Quality Index Works

This graphic breaks down how the air quality index is measured, and looks at which regions are hardest hit by atmospheric pollution and wildfires.

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how air quality works

Understanding How the Air Quality Index Works

Air quality levels have received a lot of attention in recent months.

In the wake of COVID-19 lockdowns, many places reported a marked increase in air quality. Northern India captured the world’s attention when it was reported that the Himalayan mountain range was visible for the first time in decades.

On the flipside, later in the summer, wildfires swept over the Pacific Northwest and California, blanketing entire regions with a thick shroud of smoke that spanned hundreds of miles.

How is air quality measured, and what goes into the health scores we see?

Measuring the Air Quality Index

When we see that air quality is “good” or “unhealthy”, those public health categories are derived from the Air Quality Index (AQI).

In the U.S., the AQI is calculated using four major air pollutants regulated by the Clean Air Act:

  • Ground-level ozone
  • Carbon monoxide
  • Sulfur dioxide
  • Particle pollution, also known as particulate matter

Some countries have a slightly different way of calculating their scores. For example, India also measures levels of ammonia and lead in the air.

To make these readings more accessible, the AQI has a scoring system that runs from 0 to 500, using data collected from air monitoring stations in cities around the world. Scores below 50 are considered good, with very little impact to human health. The higher the score gets, the worse the air quality is.

To make communicating potential health risks to the public even easier, ranges of scores have been organized into descriptive categories.

AQI Score RangeAQI CategoryPM2.5 (μg/m³)Health Risks
0-50Good0-12.0Air quality is satisfactory and poses little or no risk.
51-100Moderate12.1-35.4Sensitive individuals should avoid outdoor activity.
101-150Unhealthy35.5-55.4General public and sensitive individuals in particular are
at risk to experience irritation and respiratory problems.
151-200Unhealthy55.5-150.4Increased likelihood of adverse effects and aggravation
to the heart and lungs among general public.
201-300Very Unhealthy150.5-250.4General public will be noticeably affected.
Sensitive groups should restrict outdoor activities.
301+Hazardous250.5+General public is at high risk to experience strong
irritations and adverse health effects. Everyone
should avoid outdoor activities.

Particulate Matter

While all the forms of atmospheric pollution are a cause for concern, it’s the smaller 2.5μm particles that get the most attention. For one, we can see visible evidence in the form of haze and smoke when PM2.5 levels increase. As well, these fine particles have a much easier time entering our bodies via breathing.

There are a number of factors that can increase the concentration of a region’s particulate matter. Some common examples include:

  • Coal-fired power stations
  • Cooking stoves (Many people around the world burn organic material for cooking and heating)
  • Smoke from wildfires and slash-and-burn land clearing

Wildfires and Air Quality

Air quality scores can fluctuate a lot from season to season. For example, regions that are reliant on coal for power generation tend to see AQI score spikes during peak periods.

One of the biggest fluctuations occurs during wildfire season, when places that typically have scores in the “good” category can see scores reach unsafe levels. In 2020, Eastern Australia and the West Coast of the U.S. both saw massive drops in air quality during their respective wildfire seasons.

Air quality in wildfire season

Luckily, while these types of fluctuations are extreme, they are also temporary.

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