Today is Super Tuesday, where 14 states and one territory will vote. It’s the biggest day of the presidential nominating contest so far… and 1,357 delegates are up for grabs. 

Tomorrow, the Supreme Court will hear arguments in a major abortion rights case out of Louisiana, over a law that requires abortion providers to have admitting privileges at a nearby hospital. We explain.

And in headlines: Uber and Lyft do political activism in California, astronauts wanted, and the return of Batterygate.

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