The Supreme Court weighs whether punishing homeless people for sleeping outside amounts to cruel and unusual punishment. Slate's Mark Joseph Stern joins us. And, big-rig trucks spew almost a quarter of the climate pollution from the U.S. transportation sector. Battery-powered alternatives could be a climate solution, Here & Now's Chris Bentley reports. Then, how much do you need to save to retire? Jill Schlesinger, host of "Jill On Money" and CBS business analyst, breaks down how to figure it out.

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