PRESIDENTIAL RACE

WARREN, Michigan — Donald Trump is embracing what he calls flexibility on issues like torture and illegal immigration, abandoning at least for now the tough rhetoric that has fueled his rise to Republican front-runner status. 

BRAZIL-CORRUPTION

SAO PAULO — Brazilian police haul former President Luiz Inacio Lula da Silva from his home and question him for about four hours in a sprawling corruption case involving state-run oil company Petrobras that has already ensnared some of the country's most-powerful lawmakers and businessmen. 

OJ SIMPSON-KNIFE

LOS ANGELES — More than 20 years after O.J. Simpson's ex-wife and a friend were stabbed to death, police reveal they are examining a knife that was reportedly found at the home where the former football star was living at the time. 

ZIKA-BIRTH DEFECTS

WASHINGTON — The Zika virus may be linked to a wider variety of "grave outcomes" for developing babies than previously reported — threats that can come at any stage of pregnancy, researchers report. 

PUERTO RICO-PRISON PRIMARY

SAN JUAN, Puerto Rico — Thousands of inmates line up in prisons across Puerto Rico to cast early ballots in the U.S. territory's Republican primary, some saying they hoped the elections can help lift the island out of an economic crisis. 

GLOBAL WARMING

WASHINGTON — Climate change doubters may have lost one of their key talking points: a particular satellite temperature dataset that had seemed to show no warming for the past 18 years.