Originally published on Tue April 24, 2012 4:15 pm
Computers have been grading multiple-choice tests in schools for years. To the relief of English teachers everywhere, essays have been tougher to gauge. But look out, teachers: A new study finds that software designed to automatically read and grade essays can do as good a job as humans — maybe even better.
Originally published on Tue April 24, 2012 3:37 pm
The White House has been fielding questions lately about President Obama's travel — what's official, what's political and whether taxpayers are getting stuck with the bill. It's the same issue that rolls around every time a president runs for re-election.
Take President Obama's trip to Florida earlier this month. It featured an official presidential speech on the economy at Florida Atlantic University. On the same trip, the president hit two fundraisers.
Today, a group of entrepreneurs unveiled a new company that aims to mine precious metals and other resources from asteroids. The idea of exploiting the natural resources on asteroids has been around for more than a century, and this is not the first company to lay out such grand plans.
But as NPR's Nell Greenfieldboyce reports, this one does have the financial backing of some big names in high tech.
April showers bring May flowers, and in this case they bring us a selection from the garden for NPR's Backseat Book Club. Each month we ask young people to read a book along with us, and for this month, our pick is Seedfolks by Paul Fleischman.