12 PM ET: DNC Day 2 speakers, tech tycoon missing, when dramatic aging starts & more

It’s Day 2 of the Democratic National Convention – we'll tell you who's slated to speak and where Vice President Kamala Harris will be instead. Former President Donald Trump will be in Michigan today, where the plan is to focus on policy. Details about the lives lost in a tragedy at sea after a tornado hit a luxury yacht off the coast of Sicily. The European Space Agency’s Juice mission makes history on its way to Jupiter. A new study shows humans age rapidly at two key points in their lives.

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