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Searching for Water in an Untapped Source: the Air

The Airdrop is a low-tech fix to a serious problem: growing food during a drought.

As climate change and the needs of 7 billion humans increase demands on the global water supply, the pressure is on to come up with ways to squeeze water from a stone—or at least from the air. The Airdrop is a new gadget that steps up to the challenge by helping farmers in severely dry regions source water for irrigation systems by harvesting moisture that's evaporated into the ether. Edward Linnacre, the engineering student behind the project, won this year's James Dyson Award for creativity in engineering design for his low-tech solution to a grave problem.


The scientific principle guiding the technology is one that anyone who's seen dewy leaves in the morning can understand: condensation. As Linnacre explains in an elevator pitch on YouTube, "There's just an abundant resource of water in the air that surrounds us, even in places like the Negev desert in Israel, which is one of the driest deserts on the planet... All you need to do is reduce that air down to a certain temperature and you release that moisture." While other machines that do the same job are expensive and technologically complicated, the Airdrop is so simple that rural farmers could set it up themselves.

Air enters through a turbine sticking out of the ground and is pushed underground through a series of pipes. The air cools as it approaches the much-colder soil beneath the ground. Water condenses, dripping into a holding tank below. The final step is a connection to a drip irrigation system, "putting the water back into the roots of plants where it belongs, and where it has evaporated from," Linnacre says. The Airdrop was inspired by devastating droughts in Linnacre's native Australia, so let's hope it can make a difference there and for farmers around the world.

[youtube]http://www.youtube.com/watch?feature=player_embedded&v=cXe-4XE2QVI

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The problem with American Sign Language (ASL) is that over 500,000 people in the U.S. use it, but the country has over 330 million people.

So for those with hearing loss, the chances of coming into contact with someone who uses the language are rare. Especially outside of the deaf community.

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Looking back, the year 1995 seems like such an innocent time. America was in the midst of its longest streak of peace and prosperity. September 11, 2001 was six years away, and the internet didn't seem like much more than a passing fad.

Twenty-four years ago, 18 million U.S. homes had modem-equipped computers, 7 million more than the year before. Most logged in through America Online where they got their email or communicated with random strangers in chat rooms.

According to a Pew Research study that year, only 32% of those who go online say they would miss it "a lot" if no longer available.

Imagine what those poll numbers would look like if the question was asked today.

RELATED: Bill and Melinda Gates had a surprising answer when asked about a 70 percent tax on the wealthiest Americans

"Few see online activities as essential to them, and no single online feature, with the exception of E-Mail, is used with any regularity," the Pew article said. "Consumers have yet to begin purchasing goods and services online, and there is little indication that online news features are changing traditional news consumption patterns."

"Late Night" host David Letterman had Microsoft founder and, at that time the richest man in the world, on his show for an interview in '95 to discuss the "the big new thing."

During the interview Letterman chided Gates about the usefulness of the new technology, comparing it to radio and tape recorders.

Gates seems excited by the internet because it will soon allow people to listen to a baseball game on their computer. To which Letterman smugly replies, "Does radio ring a bell?" to laughter from the crowd.

But Gates presses Letterman saying that the new technology allows you to listen to the game "whenever you want," to which Letterman responds, "Do tape recorders ring a bell?"

Gates then tells Letterman he can keep up with the latest in his favorite hobbies such as cigar smoking or race cars through the internet. Letterman shuts him down saying that he reads about his interests in magazines.

RELATED: Bill Gates has five books he thinks you should read this summer.

The discussion ends with the two laughing over meeting like-minded people in "troubled loner chat room on the internet."

The clip brings to mind a 1994 segment on "The Today Show" where host Bryant Gumbel and Katie Couric have a similar discussion.

"What is internet anyway?" an exasperated Gumball asks. "What do you write to it like mail?"

"It's a computer billboard but it's nationwide and it's several universities all joined together and it's getting bigger and bigger all the time," a producer explains from off-stage.





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The future generations will have to live on this Earth for years to come, and, not surprisingly, they're very concerned about the fate of our planet. We've seen a rise in youth activists, such as Greta Thunberg, who are raising awareness for climate change. A recent survey indicates that those efforts are working, as more and more Americans (especially young Americans) feel concerned about climate change.

A new CBS News poll found that 70% of Americans between 18 and 29 feel climate change is a crisis or a serious problem, while 58% of Americans over the age of 65 share those beliefs. Additionally, younger generations are more likely to feel like it's their personal responsibility to address climate change, as well as think that transitioning to 100% renewable energy is viable. Overall, 25% of Americans feel that climate change is a "crisis," and 35% feel it is a "serious problem." 10% of Americans said they think climate change is a minor problem, and 16% of Americans feel it is not a problem that worries them.

The poll found that concern for the environment isn't a partisan issue – or at least when it comes to younger generations. Two-thirds of Republicans under the age of 45 feel that addressing climate change is their duty, sentiments shared by only 38% of Republicans over the age of 45.

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