A threat to shut the border permanently after a confrontation involving teargas and members of a so-called migrant caravan – we'll have the latest. And: Plans for a school in southeast Texas are now on hold after the discovery of scores of unmarked graves, and a history of prison labor seldom discussed. Brooke Lewis of the Houston Chronicle joins us to discuss more. Also: a scooter hits a car, or maybe it's the other way around. Whose insurance covers what? And are scooter companies or scooter riders on the hook? Plus: Old age dementia: researchers think they've found a link with mid-life stress. Those stories and more today on the Texas Standard: