Tonight on PBS

PBS News Weekend, with cases of gut disorders on the rise,

how to sort through the good and the bad information to stay healthy.

Then why the soaring cost of cocoa may have chocolate lovers paying the price.

El Nino last year caused particularly hot wet weather in Western Africa, which has impacted the quality of the cocoa harvest.

And a powerful solar phenomenon that has the potential to disable satellites and overpower

electrical grids. Good evening. I'm John Yang. As efforts intensify to break a deadlock in talks for a

deal to free the Israelis still held in Gaza, Hamas released video of two hostages

including an Israeli-American.

It shows Amri Miran, a 47-year-old Israeli, and Keith Siegel, who's 64.

It's not clear when the footage was taken. Siegel's wife was

wife was released during a brief truce in November.

Talks on a hostage release and ceasefire are expected to resume in coming days in

Egypt.

On ABC's this week, White House National Security spokesman John Kirby

said Israel promises it won't launch an invasion into Rafa until they hear the

U.S. point of view.

They've assured us that they won't go into Raffa until we've had a chance to really share our

perspectives and our concerns with them.

If we're able to get this hostage deal in place and we are still working at that.

Hamas has not fully rejected it.

They are considering this proposal on the table.

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