Online college courses are attracting hundreds of thousands of students, and that's forcing colleges and policymakers to rethink higher education. The online courses may pose a serious challenge to the way institutions deliver a college education.
Fish can absorb toxic chemicals that have been dumped into waterways, but they can also get them from eating plastic. And there's a lot of plastic in the open ocean, which scientists say can act like a sponge, soaking up the chemicals already out there.
Cornyn's voting record ranks him as the second most conservative Republican in the Senate. But some on the right feel he was insufficiently supportive of Sen. Ted Cruz's effort to defund Obamacare, and now he faces a primary challenge from Steve Stockman, a Houston-area House member.
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