Originally published on Sat April 25, 2015 3:58 pm
It has been five years since the so-called flash crash on Wall Street raised big questions about computerized trading. What caused the flash crash has been a topic of debate ever since. U.S. officials revived the debate this week by arresting a little-known trader in London.
May 6, 2010 started out as an ordinary trading day on Wall Street. Then, at around 2:45 in the afternoon, the Dow Jones Industrial Average plunged nearly 600 points within the space of a few minutes, before correcting itself.
People always ask me, "What's your favorite Tiny Desk Concert?" Well, right now it's the one recently performed by DakhaBrakha. The creative quartet from Kiev, Ukraine make music that sounds like nothing I've ever heard, with strands of everything I've ever heard. There are rhythms that sound West African and drone that feels as if it could have emanated from India or Australia. At times, DakhaBrakha is simply a rock band whose crazy homeland harmonies are filled with joy.
Originally published on Sat April 25, 2015 12:36 pm
The Hubble Space Telescope this week celebrates 25 years in Earth's orbit. In that time the telescope has studied distant galaxies, star nurseries, planets in our solar system and planets orbiting other stars.
But, even with all that, you could argue that the astronomer for whom the telescope is named made even more important discoveries — with far less sophisticated equipment.