I spoke to a student-teacher about using a current event to "jazz up" class discussions and spark student interest in science. But where would she get a good source of articles?
I suggested she could use an aggregator to pull together science items from a number of news sites. That way, all she needs to do is check one site, her own, and she will have it all at her fingertips. There are a number of ways to do it, for example, iGoogle lets you add news widgets, among other things.
Find some aggregators here. And here's a good explanation of how it works.