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:
|Rank||Lake Name||Surface Area||Type||Countries on shoreline|
|1||Caspian Sea||143,000 sq mi|
|2||Superior||31,700 sq mi|
|3||Victoria||26,590 sq mi|
|4||Huron||23,000 sq mi|
|5||Michigan||22,000 sq mi|
|6||Tanganyika||12,600 sq mi|
|7||Baikal||12,200 sq mi|
|8||Great Bear Lake||12,000 sq mi|
|9||Malawi||11,400 sq mi|
|10||Great Slave Lake||10,000 sq mi|
|11||Erie||9,900 sq mi|
|12||Winnipeg||9,465 sq mi|
|13||Ontario||7,320 sq mi|
|14||Ladoga||7,000 sq mi|
|15||Balkhash||6,300 sq mi|
|16||Vostok||4,800 sq mi|
|17||Onega||3,700 sq mi|
|18||Titicaca||3,232 sq mi|
|19||Nicaragua||3,191 sq mi|
|20||Athabasca||3,030 sq mi|
|21||Taymyr||2,700 sq mi|
|22||Turkana||2,473 sq mi|
|23||Reindeer Lake||2,440 sq mi|
|24||Issyk-Kul||2,400 sq mi|
|25||Urmia||2,317 sq mi|
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.
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.
Vegetarianism: Tapping Into the Meatless Revolution
This graphic unearths the origins of the meatless revolution, while exploring how the $1.8 trillion meat market is responding to the threat of disruption.
Vegetarianism: Tapping into the Meatless Revolution
The way people choose and consume their food is changing, and it’s encouraging a sweeping shift from animal-based to plant-based food products.
Whether it’s from the perspective of environmental impact, cruelty to animals, or health benefits, meatless diets are quickly becoming a new normal for people around the world—but where did it all begin?
Today’s infographic unearths the origins of vegetarianism and explores how the industry erupted into a lucrative web of sub-categories that are whetting the appetite of investors the world over.
The Origins of the Meat-Free Diet
Taking a holistic view of vegetarianism, there are several different diets that people typically adhere to. A vegetarian for example, doesn’t eat meat but still consumes animal products such as dairy and eggs. On the other hand, a vegan eats a strictly plant-based diet.
With 70% of the global population now reducing their meat intake, veganism has become a lifestyle choice for many. By 2026, the global market is projected to be worth over $24 billion.
While this seems like a relatively new phenomenon, the meatless revolution has been quietly building for almost two centuries.
- 1847: The first vegetarian society is formed in England
- 1898: The world’s first vegetarian restaurant opens in Switzerland
- 1944: The term “vegan” is coined
- 1994: The first World Vegan Day is introduced
- 2014: Influential breakout documentary Cowspiracy is released
- 2017: 6% of the entire U.S. population claim to be vegan
- 2018: Roughly 8% of the global population claim to eat plant-based
- 2020: Acceptance of plant-based diets by both the medical community and general public is at an all-time high
Although vegetarian and vegan diets were once heavily stigmatized, global support is now growing.
Towards a Plant-Based Future
Today, people in dozens of countries are making big strides towards plant-based lifestyles.
China, for example, introduced guidelines to help its population of 1.3 billion people reduce their meat consumption by 50%. These ambitious goals will be driven by consumer’s growing understanding of the positive impacts of eating less meat, such as:
- Health benefits
According to the American Heart Association, reducing meat intake could reduce the risk of stroke, high blood pressure, type 2 diabetes, and even certain cancers.
- Environmental impact
Animal agriculture creates more greenhouse gases than the world’s entire transportation systems combined, but shifting to a plant-based diet could significantly reduce this problem.
- Animal welfare
Roughly two thirds of the 70 billion animals farmed annually are cramped in close quarters and given heavy medication. Plant-based diets eliminate animal suffering while lowering demand for other animal food products.
In fact, if more people commit to embracing a plant-based lifestyle, it could result in up to $31 trillion—or 13% of global GDP—in savings for the economy.
Big Players Fight For a Piece of the Pie
Given the newfound consumer demand for meat alternatives, it’s no surprise that global companies are clamouring to enter the market.
Many established food companies such as Nestlé and Danone are either advancing their own formula for plant-based proteins, or acquiring companies with existing experience.
Meanwhile, fast food chain McDonald’s features vegan products as permanent staple on their menu, and report an 80% uplift in customers buying these products in certain countries.
Big Meat Shifts Gears
As new players in the space attempt to cut into the $1.8 trillion global meat market, big meat companies are responding in kind.
Tycoons such as Tyson Foods and Cargill are placing bets on plant-based startups and filling shelves with their own plant-based products.
But while plant-based products created by traditional meat companies may appeal to less rigid flexitarians, vegans and vegetarians may not accept them so readily due to their strong ethics.
Food For Thought
Along with the uncertainty of how these products will be received, there are other challenges that the market must overcome in order to be considered truly accessible. For instance, plant-based alternatives boast higher price points than their predecessor’s products, which may deter consumers from entering en masse.
Regardless, it is clear that the shift to plant-based diets is a disruptive force that could change the food industry over the long term. Early movers are dangling a golden carrot in front of investors—but will they take a bite?
Visualizing the Human Impact on the Ocean Economy
The ocean economy is under threat. How are human activities impacting the sustainable use of our ocean assets, valued at over $24 trillion?
Visualizing the Human Impact on our Ocean Economy
When you think of economic output, it’s likely the ocean isn’t the first entity that comes to mind. But from facilitating international trade to regulating the climate, the “blue economy” contributes significant value in both tangible and intangible ways.
The sustainable use of the ocean and its resources for economic development and livelihoods have such far-reaching effects, that its protection is a significant goal of the United Nations, as well as for many other countries and organizations throughout the world.
However, these vital ocean assets are in danger of sinking quickly. Ahead of World Oceans Day on June 8, 2020, we look at the total value of assets that come from our ocean, and how various human activities are affecting these resources.
Global Ocean Asset Value
Economic value from all the oceans is measured both by their direct output, as well as any indirect impacts they produce.
According to the World Wildlife Fund, these combined assets are valued at over $24 trillion. Here’s how they break down:
- Direct Output: Marine fisheries, coral reefs, seagrass, and mangroves
Total value: $6.9T
Examples of direct output: Fishing, agriculture
- Trade and Transport: Shipping lanes
Total value: $5.2T
- Adjacent Assets: Productive coastline, carbon absorption
Total value: $7.8T, and $4.3T respectively
Examples of services enabled: Tourism, education/conservation (such as jobs created)
In fact, the annual gross marine product of the oceans is comparable to the Gross Domestic Product (GDP) of countries, coming in at $2.5 trillion per year—making it the world’s eighth largest economy in country terms.
Unfortunately, experts warn that various human activities are endangering these ocean assets and their reliant ecosystems.
The Cumulative Human Impact on Oceans
An 11-year long scientific study tracked the global effect of multiple human activities across diverse marine environments. The researchers identified four main categories of stressors between 2003-2013.
- Climate change: Sea surface temperature, ocean acidification, and sea level rise
- Ocean: Shipping
- Land-based: Nutrient pollution, organic chemical pollution, direct human pollution, light pollution
- Fishing: Commercial and artisanal fishing, including trawling methods
Across the board, climate stressors were the most dominant drivers of change in a majority of marine environments. Similarly, pollution levels have also increased for many ecosystems.
Plastic pollution is especially damaging, as it continues to grow at unprecedented rates, with a significant amount ending up in the oceans. The World Economic Forum estimates that by 2050, there could be more plastic in the ocean than fish by weight.
Among the various marine environments, coral reefs, seagrasses, and mangroves proved to be most at-risk, experiencing the fastest increase in cumulative human impact. However, these are also the same ecosystems that we rely on for their direct economic output.
Overall, climate-induced declines in ocean health could cost the global economy $428 billion annually by 2050.
The Ocean Economy is in Hot Water
It can be difficult to truly understand the scale at which we rely on the ocean for climate regulation. The ocean is a major “carbon sink”, absorbing nearly 30% of the carbon emitted by human activity. But acidity levels and rising sea surface temperatures are changing its chemistry, and reducing its ability to dissolve CO₂.
According to the UN, ocean acidification has grown by 26% since pre-industrial times. At our current rates, it could rise to 100-150% by the end of the century. Overfishing is another urgent threat that shows no signs of slowing down, with sustainable fish stocks declining from 90% to 66.9% in just over 40 years.
To try and counteract these issues, this year’s virtual World Oceans Day is focused on “Innovation for a Sustainable Oceans” to discuss various solutions, including how the private sector can work with communities to maintain the blue economy. In addition, there’s a petition in place to urge world leaders to help protect 30% of the natural world by 2030.
Will our human activities continue to stress the ocean economy, or will we be able to positively reverse these trends in the years to come?
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