G-20 Cooperation Collapsing?
Spiegel interprets envy and egotism at this year's G-20 summit as a sign the days of close cooperation among the world's big 20 economic powers may have ended.
The days of close cooperation among the world's big 20 economic powers may have ended. With the economic recovery, displays of envy and egotism have reared up at this year's G-20 summit in Seoul. German Chancellor Angela Merkel is on a confrontation course with Washington over trade policy. The plan concocted by South Korean organizers of the G-20 summit is cunning. Anything negotiators fail to agree on before the start of the actual G-20 summit on Thursday night in Seoul will be left off the table when the world leaders assemble. ...For now, though, success looks very far off.
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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