The Global Water Crisis - Bytesize Science
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- Опубліковано 7 сер 2013
- Almost one billion people lack reliable access to clean drinking water. At least 80 countries have significant water shortages. The world is in a global water crisis, and the situation may get worse with population growth and global climate change. Our latest video explains the causes of this crisis -- and what science can do to potentially solve it.
"Water is going to be this century's oil," says Hessy Taft, who narrates the video. "We really need to do something. Business as usual cannot continue. We need to try to find solutions."
Taft, who is at St. John's University, states that an expanding world population, an aging infrastructure and severe climate change are causing global and national water challenges. The video focuses on possible solutions to the water sustainability crisis, including conservation, desalinating salty water, and recycling and reusing water from municipal sewage treatment plants.
Produced by the American Chemical Society
Video by Sean Parsons
Directors: Adam Dylewski and Sean Parsons
Actually now there are people that have made bill boards (forget where) that take the humidity out of the air and turn it into drinking water. Its in a place where the humidity is around 98% so its worth the while. But we are finding very clever ways to get the water back.
Fresh water comes in many instances from aquifers that have been around for millennia and are being regenerated much slower than they are being depleted. Most of water that is used will end up in the atmosphere, and most rain falls on the ocean, so we are turning drinking water into undrinkable water. There currently is no cheap, energy efficient way to turn salt water into drinking water.
Fresh water is though as we keep dumbing large amounts of it into the sea
I don't get the argument, that we need to speed up the development of bio fuel, "that doesn't need land and water". But of course there is a huge need for land and water, specifically for bio fuel, because it has to grow somewhere, right? Some arguments seem to be very confusing to me.
Water is a closed cycle. We may have problems with distribution but not supply. The same is actually true of fossil fuels. We will hopefully learn to speed up the cycle.
are we dumping fresh water into the sea? I thought only rivers did that. But there will always be precipitation and we can stop loosing the fresh water by building dams. There's water in the ground that gets renewed every time it rains. I mean, there will never be huge ships filled with fresh water like today's oil. I hate that comparision.
I think she means fresh water is finite
@ 1:59 "we need to try and find solutions" hahah... get it, solutions... water.... yeah
Hola Soy Diego:D
How is water finite? Is it going out of the planet? Water is not the next oil. That's absurd.
unless you plan on using fossil fuels at the same rate as they are being produced, they aren't "closed cycle". Water's persistence in the atmosphere is very short (though most of it rains in the ocean, and salt water isn't drinkable), CO2's isn't.
Ten minute showers are inexcusable? Yes, those guys are the worst. Not the water polluters or those who refuse to fix leaky water systems.
uwu daddy