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2B.0:02
Science fiction to fact.0:02
Exercise 1.0:05
Page 30.0:07
Pushing the limits.0:10
Science fiction has always shown us the impossible.0:16
Colonizing worlds on the other side of the galaxy, meeting alien species, or traveling back to key moments in history.0:19
Until now, though, this was all a world of the imagination.0:27
But that's changing as new scientific discoveries move ever closer to science fiction.0:31
Jedi Mind Control Device.0:40
We probably won't be levitating a spacecraft out of a swamp anytime soon, like Yoda, the Jedi Master in The Empire Strikes Back.0:43
But it is now possible to control electrical items with just a thought using a new device.0:51
At first, the Emotiv headset used brain signals and facial movements to enable the user to wirelessly control video games.0:57
However, its possibilities now go far beyond just the gaming industry.1:05
It allows the severely disabled to communicate when it's connected to a computer, and scientists are even working on a chip that they will insert directly into the human brain.1:10
They hope that one day paralyzed people will be walking again simply by thinking about moving their limbs.1:20
Some have expressed doubts about all this, however.1:26
One scientist asks, "Imagine such a device in your head that you'll be using for mind control.1:30
What if people hacked into that?1:36
What could they do to you?"1:38
The possibilities are mind-boggling.1:40
Invisibility Cloak.1:43
Harry Potter's invisibility cloak proved incredibly useful for all his adventures.1:46
But how far are scientists from developing this outrageous idea into a real prototype?1:51
Well, quite close actually.1:56
Ali Aliev of the University of Texas demonstrated on YouTube how to make something invisible at the flick of a switch using the same principle as a desert mirage.1:58
In a mirage, heat bends light out of shape, creating the illusion of water, a trick of the light that has fooled many hot and thirsty travelers.2:09
Aliev has done the same, but at much higher temperatures.2:18
By heating carbon nanotubes, which look like strands of thread, he was able to bend light enough to hide the tubes from view.2:22
Does this mean that we'll be buying fully working invisibility cloaks sometime in the near future?2:30
Well, perhaps, and we won't even have to go to Hogwarts to get it.2:36
The only problem is, so far the machine only works underwater.2:40
3-course chewing gum.2:45
Violet Beauregard paid the price after she ignored warnings not to eat the sweets in Charlie and the Chocolate Factory.2:47
The stick of gum that tasted of tomato soup, then roast beef and baked potato, followed by a mouthwatering dessert of blueberry pie and ice cream, turned her into a huge human blueberry, as the invention wasn't completely ready.2:55
But now, food scientist Dave Hart thinks that soon he will have cracked the secret to turning this weird invention into a reality.3:08
And creating a similar 3-course meal flavor chewing gum.3:16
Hart's invention will use nanotechnology to replicate a starter, a main course, and a dessert in that order.3:20
Tiny nanostructures within the gum will contain each of the different flavors.3:26
These will be broken up and released upon contact with saliva or after a certain amount of chewing, says Hart.3:31
Unfortunately, it could be some time before the gum is created.3:38
The mechanism exists, but the technique and flavors need perfecting.3:42
Time Machine.3:48
Traveling back or forward in time in Doctor Who's TARDIS may seem far-fetched, but Einstein stated that time travel was possible in theory.3:50
While this hasn't been proven yet, Ronald Mallett, an American professor of physics, believes he can do it with today's technology and for as little as $250,000.3:59
Ronald's plan is to use circulating lasers to swirl space and time around, like a spoon stirring milk into coffee.4:10
The time traveler will step into the beam of light and emerge in the past, but not the distant past.4:18
He'll only be able to travel back to a point in time from when the machine was switched on.4:24
Some physicists are skeptical, saying that the machine would have to be very large or powerful to work.4:29
But Manette still believes that he'll live to see the first time machine.4:34
By the time Manette creates his machine, he'll have been working on it for most of his life.4:39
But then he'll be the most famous inventor in history.4:44
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