Alison Bick News Today : Breaking News, Live Updates & Top Stories | Vimarsana

A bottleneck limits the effectiveness of microfluidic chips. Reaction-containing droplets can collide, break up, and foul experiments. ''It's a traffic problem, like several lanes of cars trying to squeeze through a tollbooth,'' says Sindy Tang, a mechanical engineering professor at Stanford. Placing ''traffic circles'' in the flow path causes droplets to line up in an orderly fashion so they can zoom through the system with far fewer collisions.

>> join me at the big top, where some local visually impaired students will get the chance to feel the ringling bros. barnum & bailey circus. >> so, get ready. "teen kids news" starts right now. >> welcome to "teen kids news." i'm mwanzaa. >> and i'm siena. here's this week's top story. social networking -- speak to any kid, and they'll tell you it's as much a part of their daily routine as eating dinner. speak to anyone from law enforcement, and they'll tell you that it can be an invitation for trouble. the internet is a two-way window. it allows us to research school projects and k...

>> join me at the big top, where some local visually impaired students will get the chance to feel the ringling bros. barnum & bailey circus. >> so, get ready. "teen kids news" starts right now. >> welcome to "teen kids news." i'm mwanzaa. >> and i'm siena. here's this week's top story. social networking -- speak to any kid, and they'll tell you it's as much a part of their daily routine as eating dinner. speak to anyone from law enforcement, and they'll tell you that it can be an invitation for trouble. the internet is a two-way window. it allows us to research school projects and k...

students will get the chance to feel the ringling bros. barnum & bailey circus. >> so, get ready. "teen kids news" starts right now. >> welcome to "teen kids news." i'm mwanzaa. >> and i'm siena. here's this week's top story. social networking -- speak to any kid, and they'll tell you it's as much a part of their daily routine as eating dinner. speak to anyone from law enforcement, and they'll tell you that it can be an invitation for trouble. the internet is a two-way window. it allows us to research school projects and keep up with our friends. but social-networking sites also let ...

>> join me at the big top, where some local visually impaired students will get the chance to feel the ringling bros. barnum & bailey circus. >> so, get ready. "teen kids news" starts right now. >> welcome to "teen kids news." i'm mwanzaa. >> and i'm siena. here's this week's top story. social networking -- speak to any kid, and they'll tell you it's as much a part of their daily routine as eating dinner. speak to anyone from law enforcement, and they'll tell you that it can be an invitation for trouble. the internet is a two-way window. it allows us to research school projects and k...