As the world’s climate patterns continue to shift unpredictably, places where drinking water was once abundant may soon find reservoirs dry and groundwater aquifers depleted. In this talk, civil and environmental engineer David Sedlak shares four practical solutions to the ongoing urban water crisis. His goal: to shift our water supply towards new, local sources of water and create a system that is capable of withstanding any of the challenges climate change may throw at us in the coming years.
TEDTalks is a daily video podcast of the best talks and performances from the TED Conference, where the world’s leading thinkers and doers give the talk of their lives in 18 minutes (or less). Look for talks on Technology, Entertainment and Design — plus science, business, global issues, the arts and much more.
Find closed captions and translated subtitles in many languages at
Follow TED news on Twitter:
Like TED on Facebook:
Subscribe to our channel:
Nguồn: https://12m-15m.org/
Xem thêm bài viết khác: https://12m-15m.org/category/moi-truong
I feel like all the people in the comments are just annoyed kids
making memes to deflect their annoyance at having to do homework
Appreciate video content! Apologies for butting in, I would appreciate your opinion. Have you ever tried – Taparton Energetic Limbs Takeover (google it)? It is a good exclusive product for preparing yourself for a mega drought without the hard work. Ive heard some super things about it and my friend Sam at very last got excellent results with it.
Great video content! Excuse me for butting in, I would love your thoughts. Have you heard the talk about – Taparton Energetic Limbs Takeover (just google it)? It is a smashing one off product for preparing yourself for a mega drought minus the normal expense. Ive heard some great things about it and my cooworker after a lifetime of fighting got astronomical results with it.
Thanks for the video. It was very helpful
if this interests you, check out Israels superb efforts on water management. They now have a surplus.
Also check out Fog Nets in the Atacama desert which are very inspiring.
Greetings from the UK.
12:23 Summary
11:11 Seawater Desalination
10:30 Water Conservation
6:17 Burbank CA
leet!!
the answer is veganism
Why is he putting so much effort into avoiding to mention Singapore ? I have heard about the exact same talk from Singapore authorities, except that they talked in the past tense, because the whole system is already in place. This is a case worth mentioning if you're trying to convince a crowd about a solution.
Many people (especially vegans) like below is repeat a lot of misinformation especially about water use since they clearly doesn't understand how water footprint numbers are derived or what those numbers actually represent. The vast majority 98% of the water in a water footprint number for meat is the GREEN water (primarily RAIN) it takes to grow the feed, forage or grasses that livestock eat over their lifetimes. Very little of a water foot print number is consumption (around 1%). In a pastured based system (e.g. grass fed and finished cattle) grasses don't require as much water as crops. In reality again with cattle (cow/calf/stocker/and grass finished operations) as an example, these animals are raised on land not suitable for crop production without massive blue water diversion like in California. BLUE water is what's critical NOT green water. Diverting river water, and pumping aquifers is what's not sustainable. So for water usage you have to look at appropriate land use, meaning what's the most effective use of the GREEN rain water that falls from the sky especially on land that isn't well suited for crop production.
Here's a paper I wrote on this topic that goes into more detail: http://www.examiner.com/article/la-chef-editorial-understanding-numbers Numbers claiming 56% of water is used for AG are completely bogus as well in part for the reasons I noted, and also because a lot of water is diverted for ecological uses. In California, the total number for Ag bantered about is 80% but the real number is closer to 40% when accounting for things like diverting water to keep salt water out of the Delta river basin
Shine UV light on the water. This is called RADIATION!?! Do you really want to drink water that has been treated with radiation?
Here's a thought LA. Move out of the desert.
How to avoid a catastrophic drought? Easy: Stop eating meat.
A large portion of this potable water is being fed to livestock directly and to the feed that the livestock will consume. Animal agriculture is also the causing desertification and deforestation which likely affects rainfall as vegetation and rainfall are tightly correlated.
A low estimate states that a single pound of beef requires 600 gallons of water to produce! That's enough for 25 days of 10-minute showers (2.5gallon/min)! This has been estimated to be the 3-day consumption of an average meat-eater in the US.
hmm, I don't know about the details but I think that the first two ideas are used in germany for 50 years or so?
Hello people, I'm looking for a specific ted talk video in which the speaker does a biography about Muhammad Ali. I know its on this channel but i cant find the speaker or the video. Thanks for the help.
Fascinating talk.
how about we fucking take countries with water over and ship it here kinda like oil…send in the troops already
The meat industry needs 2-10 times more water than plants. Also the meat and diary industry uses about 46% of the total land mass.
Just saying.
Amazing how many geniuses and experts who have all the answers posting comments here.
His 4 sources of water , is a complete ripoff of Singapore's 4 national tap! Do google about Singapore and you can see the stark similarity! Cleaning of water through his 2 advance step and desalination has been done for the past 15 years in Singapore.
Singapore has put all of these ideas in good use since 10 years ago. Why is this guy talking like he has got some brilliant ideas?
Stop washing your cars and watering your lawns.
Maybe California should stop growing produce for all of North America, and grow only its own food, with other US states providing for themselves as well…
How about this for an idea, don't build mega cities in the dessert.
Watch the movie 'Slingshot'. There is technology right now able to filter water for everyone. The UN and its socialist idiot leaders didn't want anything to do with it. Wasn't part of Agenda 21. We have the technology right now.
In this candid talk, David Sedlak gives some pragmatic ideas for how to replenish our water resources. The climate change is causing doom all around the world. This is the right time to discuss the subject like this. I hope the politicians, policy makers and people who are associated with the 'water resource management' will take note of this kind of ideas to stabilise the woefully disturbing 'climate change.'
Instead of focusing on preventing climate, he should focus on preventing earthquakes and volcanoes. Then a cure for all cancers. Then he will convince me he is a God, and I will worship him. Until then, quack, quack.
Drought is called supply versus demand. Population increases need more water. This is not from lack of rain. Predicting End Days catastrophic drought is just shamanism. Give this man a rattle and feather hat to chant.
Why can't we use the extreme pressures deep in the ocean to power the reverse osmosis system? Say you run a pipe down to the ocean debts that has a tank at the bottom with walls lined in a fine, semi-permeable membrane. At the surface you can have a large container or ship that holds the fresh water. As long as you keep pulling filtered water out, the deep water pressure will keep forcing water though the membrane<the membrane being at the bottom of the pipe>
It'll be like oil drilling but the the water pumps itself. The pressure depends on the level of fresh water at the surface of the pipe/container . So a ship can just pump the fresh water into it's hull or into a large bag floating in the ocean and ship it and the deep sea pressure will just force more water into the pipe to replace the water that was removed.
Even more, you can run this pipe to the shore and have it pumped onto the land and collected in reservoirs.
I don't see what could be wrong with this idea, anyone think otherwise? Please comment.
The four faucets of the hydrocolypse.
Wow, a TED talk, nay, a TEDx talk that's actually about a real topic? And whose presentation isn't mired with personal story or anecdote? What is happening here?
Reservoirs???? where we fracked all those fucking chemicals!!!!!!!!!!!!!!!! TO get OIL
Way 5: Catch Groudon
5:56 actually the water that comes off your roof is ussually pretty clean, i wouldnt mind drinking it. just make sure your gutters are clean and whatnot.