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	<title>NOVA&#039;s Physics Blog: The Nature of Reality</title>
	<link>http://www.pbs.org/wgbh/nova/physics/blog</link>
	<description>The physics of nothing, everything, and all the things in between.</description>
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		<title>A Simple Universe</title>
		<description><![CDATA[The universe is simple. How simple? This simple: This is the cosmic background radiation as detected with a Bell Labs radio telescope in 1964. The band across the middle is the center of our galaxy. The rest is the humming echo of the Big Bang, uniform in every direction—just as theorists had been predicting. “Which [...]]]></description>
		<link>http://www.pbs.org/wgbh/nova/physics/blog/2012/05/a-simple-universe/</link>
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		<title>Antimatter 101</title>
		<description><![CDATA[Antimatter sounds like science fiction, and it has certainly powered its fair share of imaginary space ships and interplanetary blasters. But antimatter itself is fact, not fantasy. Antimatter is the opposite of matter: Bring the two of them into contact and they annihilate each other, generating energy according to Einstein’s famous equation E = mc2. [...]]]></description>
		<link>http://www.pbs.org/wgbh/nova/physics/blog/2012/05/antimatter-101/</link>
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		<title>What&#8217;s the Matter With Gravity?</title>
		<description><![CDATA[Of the four fundamental forces of physics, gravity is the one you know in your bones. Gravity owns you. Try to cross a downhill street slick with ice and you slide helplessly; whatever is in control, it&#8217;s not you. First you appreciate friction, then you understand the full omnipotence and omnipresence of gravity. Gravity pulled [...]]]></description>
		<link>http://www.pbs.org/wgbh/nova/physics/blog/2012/05/whats-the-matter-with-gravity/</link>
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		<title>Writing a Bold Future, Together</title>
		<description><![CDATA[Can science fiction influence the course of real science? By “science fiction,” I don’t mean fantasy—vampires, werewolves, elf princesses, that kind of thing. Science fiction may seem fantastical, but even its most fantastic elements are driven by real science. The obvious predictions of science fiction are all around us, from iPads to cell phones and [...]]]></description>
		<link>http://www.pbs.org/wgbh/nova/physics/blog/2012/04/writing-a-bold-future-together/</link>
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		<title>Who&#8217;s Afraid of the Dark? Alternatives to Dark Energy</title>
		<description><![CDATA[Last week, we asked whether astronomers could be wrong about dark matter, the invisible stuff that seems to help hold galaxies together. Is it possible that dark matter doesn’t really exist? This week, we’ll investigate whether there are viable alternatives to the idea of dark energy, the mysterious stuff that astrophysicists believe is pushing our [...]]]></description>
		<link>http://www.pbs.org/wgbh/nova/physics/blog/2012/04/whos-afraid-of-the-dark-alternatives-to-dark-energy/</link>
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		<title>Who&#8217;s Afraid of the Dark? Alternatives to Dark Matter</title>
		<description><![CDATA[What is dark matter? An invisible substance thought to make up a quarter of all the “stuff” in the universe, dark matter leaves its gravitational fingerprints all over the cosmos. But despite decades of trying, scientists have failed to capture a single speck of dark matter, in part because they don&#8217;t have a clear idea [...]]]></description>
		<link>http://www.pbs.org/wgbh/nova/physics/blog/2012/04/whos-afraid-of-the-dark-alternatives-to-dark-matter/</link>
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		<title>April Fools&#8217; Physics</title>
		<description><![CDATA[If you thought that physicists couldn’t take a joke, a web site called arXiv begs to differ. Arxiv is a preprint server, meaning that it’s where you can get an advance look at papers that haven’t yet been published in scientific journals. Of course, not every paper that appears on the arXiv is bound for [...]]]></description>
		<link>http://www.pbs.org/wgbh/nova/physics/blog/2012/04/april-fools-physics/</link>
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		<title>A Higgs by Any Other Name</title>
		<description><![CDATA[Physicists are on the brink of a breakthrough discovery: They may have finally cornered the Higgs boson, the subatomic particle hypothesized to give mass to all the stuff in the universe. But should we really be calling this particle the “Higgs”? Peter Higgs, it turns out, wasn’t the only one to come up with the [...]]]></description>
		<link>http://www.pbs.org/wgbh/nova/physics/blog/2012/03/a-higgs-by-any-other-name/</link>
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		<title>Are Space and Time Fundamental?</title>
		<description><![CDATA[Imagine describing our universe to an alien from an alternate dimension. Where would you start? You might reasonably begin by explaining that we live in three dimensions of space and one dimension of time. Space and time are so fundamental to our understanding of the universe that they are woven into nearly every equation in [...]]]></description>
		<link>http://www.pbs.org/wgbh/nova/physics/blog/2012/03/are-space-and-time-fundamental/</link>
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		<title>Do Computers Dream of Electric People?</title>
		<description><![CDATA[Are we living in someone else’s fantasy? The Chinese philosopher Zhuangzi posed this question more than two thousand years ago when he recalled waking from a dream unsure whether he was a man who dreamed he was a butterfly or a butterfly dreaming that he was a man. Today, with the advent of computers that [...]]]></description>
		<link>http://www.pbs.org/wgbh/nova/physics/blog/2012/03/do-computers-dream-of-electric-people/</link>
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