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Some of the World's Biggest Lakes Are Drying Up

nationalgeographic.com

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Re: Some of the World's Biggest Lakes Are Drying Up

#2
I am wondering if mass-scale manufacturing & construction can solve this problem. Imagine large greenhouse-alike setups which spur vaporization, siphoning fresh water off into a lake. The sun would passively vaporize incoming salty water. Reaching m³s/minute of freshwater throughput would without doubt require massive scale. Since freshwater demand is increasing and supply decreasing, the economics of such project become more interesting every month.

Will such plan work at all?

Re: Some of the World's Biggest Lakes Are Drying Up

#3
You don't need to go to South America, Asia or middle East - it's happening in Europe and no one seems to notice.

Look at Portugal and Spain, it's becoming a desert - the day of the cold wave the south of Portugal and Spain had the same temperatures of some country's in Africa.

Re: Some of the World's Biggest Lakes Are Drying Up

#4

You don't need to go to South America, Asia or middle East - it's happening in Europe and no one seems to notice. Look at Portugal and Spain, it's becoming a desert - the day of the cold wave the south of Portugal and Spain had the same temperatures of some country's in Africa.

People notice, but they feel helpless to stop it. Nobody wants to dwell on their impending doom, which ironically hasten their doom in this case.

Re: Some of the World's Biggest Lakes Are Drying Up

#5

I am wondering if mass-scale manufacturing & construction can solve this problem. Imagine large greenhouse-alike setups which spur vaporization, siphoning fresh water off into a lake. The sun would passively vaporize incoming salty water. Reaching m³s/minute of freshwater throughput would without doubt require massive scale. Since freshwater demand is increasing and supply decreasing, the economics of such project be…

This sounds like it has the same problem as salinization does. In most places conservation is cheaper.

Re: Some of the World's Biggest Lakes Are Drying Up

#6
post #5

I am wondering if mass-scale manufacturing & construction can solve this problem. Imagine large greenhouse-alike setups which spur vaporization, siphoning fresh water off into a lake. The sun would passively vaporize incoming salty water. Reaching m³s/minute of freshwater throughput would without doubt require massive scale. Since freshwater demand is increasing and supply decreasing, the economics of such project be…

This sounds like it has the same problem as salinization does. In most places conservation is cheaper.

Not to mention that conservation doesn’t use a ton of energy, most of which will be from burning fossile fuels. It’s a bit counterproductive if your plan to save the world burns a ton of coal, oil, etc to build and maintain.

Re: Some of the World's Biggest Lakes Are Drying Up

#8
How much of the missing water is actually due to higher temperatures, and how much is due to people siphoning water from the aquifers that feed the lake? This article mostly focuses on "climate change" hysterics, but also acknowledges the siphoning problem.

A HN comment [0] linked to a TucsonWeekly [1] piece about how Tucson used to be an oasis. Similarly, the Salt River used to run year-round through Phoenix. Las Vegas was an oasis too. Cattle and wells turned Tucson's river dry. The Salt River is blocked by dams, where most the water is used for plants and allowed to evaporate. Las Vegas' population vastly exceeds its natural water supply. I don't think the disappearance of these cities' oases can be blamed on "climate change".

[0] https://news.ycombinator.com/item?id=16118109

[1] https://www.tucsonweekly.com/tucson/a-river-ran-through-it/C...

The Israelis are experts in hydroponics, which uses a fraction of the water used for irrigation. This is a more responsible way to use water in an arid country.

If the problem causing these lakes to dry up is mostly "climate change", these people's predicaments are hopeless. But if the problem is mostly irresponsible use of the aquifers upstream from the lake, the problem is solvable.

Re: Some of the World's Biggest Lakes Are Drying Up

#10

You don't need to go to South America, Asia or middle East - it's happening in Europe and no one seems to notice. Look at Portugal and Spain, it's becoming a desert - the day of the cold wave the south of Portugal and Spain had the same temperatures of some country's in Africa.

People notice, but they feel helpless to stop it. Nobody wants to dwell on their impending doom, which ironically hasten their doom in this case.

They don't understand how bad it is, specially the government. For example, I don't understand why water intensive cultures are still being allowed.

The smell that comes from animal farms is so bad because there are no more black water pools - they can't even illegally dump it to rivers because there are no rivers to carry it.

It's getting beyond serious, this coming summer will result in the death of animals and ecosystems.

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