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.
5 Drivers Behind the Sustainable Investing Shift
Sustainable investing in the U.S. is smashing records, with $20.9 billion of net flows in H1’2020. Here are 5 key drivers behind this growth.
5 Drivers Behind the Sustainable Investing Shift
View the high resolution infographic by clicking here.
Against all odds, sustainable investing in the U.S. smashed records in 2020.
Estimated net flows reached $20.9 billion in the first six months alone—that’s nearly equal to the amount of new money invested in all of 2019.
What is driving the shift to sustainable investing? This visual dashboard from Raconteur explains five key drivers, from generational shifts to investors’ preferred strategies.
Millennial Investors and Personal Beliefs
Interest in sustainable investing is booming across the general population. However, there’s a clear generational trend, as well.
While the portion of each group that is “very interested” in sustainable investing has shot up since 2015, this share is significantly higher for millennials.
Another correlated trend emerges with this.
These days, investors are more likely to follow their conscience. Acccording to a recent report by Schroders, the majority of investors will not budge on investing against their beliefs, even if returns were theoretically higher.
|Level of Investment Knowledge|
|Would you invest against your personal beliefs?||Beginner||Intermediate||Expert|
|Yes, if returns are higher||18%||20%||29%|
|No, I would not invest against my beliefs.||82%||80%||71%|
Top Themes of Interest
Powered by these personal beliefs, which categories are attracting investors? It turns out many investors are very interested in including environment-related themes into their portfolios:
- Plastic reduction: 46%
- Climate change: 46%
- Community development: 42%
- Circular economy: 39%
- Sustainable Development Goals: 36%
- Multicultural diversity: 30%
- Gender diversity: 30%
- Faith-based values: 24%
However, these aren’t the only considerations. Other themes that fit into broader ESG categories such as gender diversity or faith-based values make an appearance, too.
Which Investor Groups are Driving Interest?
Now, we turn our attention to the specific groups that are responsible for the growing momentum towards sustainable investing. This may be surprising to some, but it is institutional investors that are leading the pack by far:
|Group||Share of Group|
|High net worth (HNW) investors||19%|
|Politicians or regulators||13%|
|Industry trade bodies||6%|
This also disproves a common myth that millennials are the only ones interested in the sector. Institutional investors equally want to see a double bottom line: an ROI on their money, while also making the world a more sustainable place.
Sources of Information
So where are institutional investors sourcing their information around sustainable investing? Sharing their ideas in like-minded communities, such as webinars and conferences emerged as the preference for nearly two-thirds of those surveyed in this group.
But how do investors know that their investment is truly sustainable? For this, 34% of global investors feel that third-party labels from independent organizations help lend credibility, and confirm that the chosen investment in question is indeed carried out in a responsible manner.
As more and more institutional investors are digital natives, a significant share of them are also beginning to use social media to influence their decision-making process—and some even rely on it as their key source of research.
Sustainable Investing Strategies
We’ve left the best for last—armed with this knowledge and confidence, which sustainable investing strategies are the most attractive? Here’s how organizations are approaching ESG:
- Sustainability integration: 52%
- Negative screening: 50%
- Shareholder engagement: 31%
- Impact investing: 19%
- Positive screening: 12%
- Thematic investing: 5%
While negative screening—avoiding investments in “sin” stocks such as tobacco or fossil fuels—is still a popular strategy, actively integrating sustainability into one’s portfolio is emerging more front and center.
The Overall Trend of Sustainable Investing
The data makes clear that institutional investors are the main driving forces behind sustainable investment for the time being. But as millennials accumulate wealth, their values may naturally lead them towards more sustainable investment.
Another important point to note is that sustainable investing has been resilient to change. In fact, despite the COVID-induced stock selloff in early 2020, ESG leaders exceeded expectations.
While these drivers evolve over time, it’s clear that sustainable investing is more than having its moment in the spotlight—it’s here to stay.
Mapped: Which Countries Have the Worst Air Pollution?
This population-weighted cartogram shows the countries with the worst air pollution, based on fine particulate matter (PM2.5) concentration.
Mapped: Which Countries Have the Worst Air Pollution?
View the high-resolution of the infographic by clicking here.
In many parts of the world, blue skies are a rarity. Instead, accumulated levels of air pollution from industrial processes and motor vehicle traffic cloak cities in smog year-round.
But to what extent does air pollution impact the human population around the world?
To answer this question, data scientist Matt Dzugan has created a cartogram that shades each country based on levels of fine particulate matter (PM2.5) air pollution experienced by the population living there.
First off, let’s talk about the visualization style itself.
Not your everyday map, this unconventional cartogram resizes the borders of countries based on their total populations. In this style, a single square represents 500,000 people. According to Matt Dzugan, the cartogram view is meant to provide a bird’s eye perspective of the impact of air pollution and fine particulate matter (PM2.5) on human lives.
A clear correlation emerges: some of the most inhabited places in the world also experience the most pollution. Highly populated China and India show up the most prominently, while other countries like Australia and Canada seem to disappear off the map entirely.
To put this into perspective, 800 dark brown squares on this cartogram (a PM2.5 concentration of 50 μg/m³) represent 400 million people in India that are exposed to polluted air at levels five times past thresholds set by the World Health Organization.
Top 20 Countries with Cleanest Air
So how do countries on each end of the PM2.5 spectrum shake out? Pulling supplemental data from the WHO, here’s how the top 20 countries with the cleanest air rank.
New Zealand tops the above list. And as you can see, air quality tends to be highest in advanced coastal economies with low population densities—and being an island or bordering less habitable Arctic tundra also helps as well.
That said, there are temporary bouts when air quality can dip in even the best of countries. For example, recent wildfires on the West Coast of the United States and Australia resulted in reddish-orange skies and hazardous levels of air quality for weeks at a time.
The 20 Countries with the Most Air Pollution
On the other hand, it may be surprising that Nepal lands all the way at the bottom of the air quality list. Why is this landlocked country—home to less than 30 million—suffering from hazardous air pollution reaching 100μg/m³?
In short, the emissions from fossil-fuel driven traffic and manufacturing operations are trapped within the Kathmandu valley, which causes air quality issues for people living in the region.
The regions with lower air quality tend to be more landlocked with developing economies, such as some countries in central Africa and Asia, as well as in the Middle East.
Finally, while China is lower on this overall list, it’s worth noting that it is one of the most prominent on the cartogram due to its sheer population size.
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