Twitter Forecasts the Stock Market
"The emotional roller coaster captured on Twitter can predict the ups and downs of the stock market, a new study finds." Wired Science on the unexpected correlation.
"Measuring how calm the Twitterverse is on a given day can foretell the direction of changes to the Dow Jones Industrial Average three days later with an accuracy of 86.7 percent. 'We were pretty astonished that this actually worked,' said computational social scientist Johan Bollen of Indiana University-Bloomington. The new results appear in a paper on the arXiv.org preprint server. Bollen and grad student Huina Mao stumbled on this computational crystal ball almost by accident. Earlier studies had found that blogs can be used to gauge public mood, and that tweets about movies can predict box office sales."
Giving our solar system a "slap in the face"
- A stream of galactic debris is hurtling at us, pulling dark matter along with it
- It's traveling so quickly it's been described as a hurricane of dark matter
- Scientists are excited to set their particle detectors at the onslffaught
Two massive clouds of dust in orbit around the Earth have been discussed for years and finally proven to exist.
- Hungarian astronomers have proven the existence of two "pseudo-satellites" in orbit around the earth.
- These dust clouds were first discovered in the sixties, but are so difficult to spot that scientists have debated their existence since then.
- The findings may be used to decide where to put satellites in the future and will have to be considered when interplanetary space missions are undertaken.
Once again, our circadian rhythm points the way.
- Seven individuals were locked inside a windowless, internetless room for 37 days.
- While at rest, they burned 130 more calories at 5 p.m. than at 5 a.m.
- Morning time again shown not to be the best time to eat.
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