PRESIDENTIAL RACE-BIDEN

WASHINGTON — One of Democratic Vice President Joe Biden's most vocal supporters joins the super political action committee urging him to run for president, as interest in Biden's political future spikes amid fresh signs that his aides are looking closely at a 2016 campaign.

MEXICO-JOURNALIST SLAIN

MEXICO CITY — Mexico City's mayor says no expense will be spared and no line of investigation ignored in the hunt for the killers of four women and a photojournalist, who had fled the state where he worked fearing for his safety.

ARGENTINA-WHALE

BUENOS AIRES, Argentina — A whale appears in the marina of one of Buenos Aires' most exclusive neighborhoods, periodically surfacing alongside luxury yachts while hundreds of onlookers try to capture the moment with smartphones. 

VENEZUELA-OPPOSITION LEADER

CARACAS, Venezuela — Venezuela's first lady will run for congress while an opposition leader has been formally barred from the contest. 

CALIFORNIA WILDFIRES

LOWER LAKE, California — Firefighters work aggressively to regain control after a raging California fire jumps a highway that had served as a containment line for the massive blaze — one of 20 wildfires burning in California. 

CANADA-HITCHHIKING ROBOT

TORONTO — Collapsed among trash and dead leaves, its arms ripped off and its skull and brain nowhere in sight, the talking and tweeting hitchhiking robot from Canada met its untimely end in Philadelphia over the weekend. But there may be another chance at life for the child-sized traveling robot.