One of the primary issues at the heart of the the Chicago teachers' strike is whether student test scores should be used to evaluate teachers and determine their pay. Mayor Rahm Emanuel is pushing that approach, as are other officials around the nation.
But many teachers insist that it's inherently unfair to grade their teaching based on their students' learning.
Over the years, ZZ Top has stayed contemporary: dabbling in new wave, flirting with grunge and techno, making goofy music videos, even using a drum machine. But the band has never strayed too far from its classic amalgam of electric blues, garage rock and greasy grooves. On their new album, La Futura, the members sound like their old selves.
When crossing from Uganda into Congo at the shabby border town of Bunagana, I encountered a broadly smiling man in a black leather jacket named Hamid Kashaisha.
He asked if I wanted to see the gorillas. I replied that it's guerrillas — with guns, that is — that I wanted to see: the M23 rebels who, for the past two months, had occupied a piece of real estate in eastern Congo larger than Delaware.
Every election season Republicans and Democrats tried to rally their base and to go after undecided voters. They're increasingly using the Internet in Get Out The Vote efforts.
NPR correspondent Shankar Vedantam, who reports on social science research, joins me now to talk about how Facebook could become a potent weapon in going after the biggest untapped voting bloc in the nation. Shankar, welcome.
SHANKAR VEDANTAM, BYLINE: Hi, Melissa.
BLOCK: Who are these mystery voters, this untapped voting bloc that we mentioned?
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In this hour of the program, we remember Christopher Stevens, the first sitting U.S. ambassador killed in more than 30 years. And we'll explore how the attacks in Libya and Egypt have become fodder for political debate.
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The deadly movie theater shooting in Aurora, Colorado has become a key issue in at least two tight congressional races in that battleground state. Since the attacks, two Democratic candidates - running in districts in and around Aurora - have called for stricter gun laws. But Republicans have accused them of trying to politicize the tragedy.