Is Venture Capital Broken?
From the standpoint of innovation, entrepreneurs may be changing the way they are thinking—they are becoming less ambitious, says Sean Parker, creator of Napster and Facebook.
Sean Parker, the entrepreneur behind Napster and Facebook now turned investor, was talking about the state of the venture capital industry last week when he said: "There's too much money chasing too few deals." At 30, Mr. Parker, who was recently portrayed by Justin Timberlake in "The Social Network," has been thinking a lot about innovation—or the lack of it — in the United States. And he’s come to a depressing conclusion about the money industry that he says used to be "the engine of innovation" for this country. "The risk-reward doesn’t work out in favor of putting money into venture capital anymore," he said.
Here's the science of black holes, from supermassive monsters to ones the size of ping-pong balls.
- There's more than one way to make a black hole, says NASA's Michelle Thaller. They're not always formed from dead stars. For example, there are teeny tiny black holes all around us, the result of high-energy cosmic rays slamming into our atmosphere with enough force to cram matter together so densely that no light can escape.
- CERN is trying to create artificial black holes right now, but don't worry, it's not dangerous. Scientists there are attempting to smash two particles together with such intensity that it creates a black hole that would live for just a millionth of a second.
- Thaller uses a brilliant analogy involving a rubber sheet, a marble, and an elephant to explain why different black holes have varying densities. Watch and learn!
- Bonus fact: If the Earth became a black hole, it would be crushed to the size of a ping-pong ball.
Protected animals are feared to be headed for the black market.
In a breakthrough for nuclear fusion research, scientists at China's Experimental Advanced Superconducting Tokamak (EAST) reactor have produced temperatures necessary for nuclear fusion on Earth.
- The EAST reactor was able to heat hydrogen to temperatures exceeding 100 million degrees Celsius.
- Nuclear fusion could someday provide the planet with a virtually limitless supply of clean energy.
- Still, scientists have many other obstacles to pass before fusion technology becomes a viable energy source.
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