Readers respond to a guest essay about throwaway plastic. Also: President Trump the divider; stealth legislation.

"I don’t expect most governments to suddenly restore foreign aid to historic levels. But I'm an optimist," writes Gates.

More than 351 million women and girls could still be living in extreme poverty by the end of the decade if current trends persist.

The tool has only been in development for about a year: "We pushed it out very fast," Kevin Vranes, Worldly's chief product ...