Today on "World News with Charles Gibson":

On the Trail:
With the Democratic nomination wrapped up and the general election officially under way, Charlie Gibson caught up today with Sen. John McCain on the trail in Florida. Join us tonight for his one-on-one interview with the presumptive Republican nominee.

Food Prices Across the Globe:
The rising cost of wheat and grains are affecting families across the world. What happens when families outside of the U.S. don't have the luxury of buying lower-priced foods? ABC's Robert Krulwich has a unique look at the dinner table with a handful of families from all over the world.

And on our "World News webcast", along with our top headlines:

Moving Past the Primaries:
Sen. Hillary Clinton plans to concede and endorse Sen. Barack Obama on Saturday. Obama, meanwhile, is moving ahead with his campaign and weighing his options for running mates. ABC's David Wright reports.

Portraits of the Athlete:
Sports Illustrated magazine has published some of the most striking images of athletes both on and off the field. One of their most creative photographers, Walter Iooss has been shooting for the magazine since 1961 and has recently compiledP his best work in a new book. The "World News" webcast brings you some of the highlights.