A mysterious burst of charged particles from space hit Earth at some point from 774 to 775 C.E. Scientists know this thanks to a spike in radioactive carbon found in ancient tree rings. What they didn’t know was the source of the burst.
Now, a team of physicists argues that our own sun was the culprit. The sun normally emits bursts of charged particles called coronal mass ejections (lower left of image), but they either never strike the Earth or are too weak to do much damage.
Theoretically, however, the sun could release a burst strong enough to explain 爱上海419龙凤网站
Reprising their characters from the hit series, “Mad Men,” actors Vincent Kartheiser and Rich Sommer have teamed up with U.S. PIRG and Funny Or Die to voice their support for high-speed rail in America.
Ensconced in their usual roles of 1960’s ad men, Kartheiser begins pitching his ideas for selling high-speed rail to Americans, and more specifically how to wean them off their cars.
“Why are you worrying about this?” Sommer responds. “Trains make sense. They’re efficient, they’re convenient, they’re good for jobs. Hell, I’d rather take a train than fly or drive anywhere. We don’t need to sell trains.”
But despite President Obama’s proposal for a 6-year, $53 billion spending plan toward high-speed rail, numerous politicians aren’t on board. Some have made dramatic protests against the measures, like Florida Gov. Rick Scott, who rejected a last-ditch move by the Obama Administration to build a portion of a national high-speed rail system in his state, though California has said they would be more than happy to take the money that上海贵族宝贝官网