MAY DAY - Trade unions and other groups stage rallies around the world to mark International Workers Day. 

MAY DAY - UNITED STATES - Seattle police used pepper spray to disperse black-clad anti-capitalist protesters authorities say threw rocks, flares, bricks and Molotov cocktails at officers during a rowdy May Day gathering.

IRAQ - Anti-government protesters disband at least temporarily from the heavily fortified Green Zone they had stormed a day earlier. Meantime, the Islamic State group carries out its second major attack in Iraq in as many days - a pair of car bombs that kill more than 30 people. 

UNITED STATES-SYRIA - Scrambling to resuscitate a nearly dead truce in Syria, the Obama administration is again forced to turn to Russia for help, with little hope for the desired U.S. outcome. At stake are thousands of lives and the fate of a feeble peace process essential to the fight against the Islamic State group. 

PUERTO RICO-ECONOMIC CRISIS - Puerto Rico's governor announces that his administration will not make a $420 million bond payment due Monday, after a failure to negotiate a legal or political solution to the U.S. territory's public debt crisis. 

LAST CIRCUS ELEPHANTS - Ringling Bros. and Barnum & Bailey Circus bid farewell to its performingelephants on Sunday, as the show closed its own chapter on a practice that has entertained audiences in America for two centuries but has come under fire by animal rights activists. 

SPYING BILLBOARDS - An outdoor advertising company that owns thousands of billboards across the country, including in Times Square, and around the world, is using mobile phone data to learn about people who are passing their displays in order to cater ads to specific consumers, and a leading U.S. lawmaker wants federal officials to investigate if the practice is legal. 

PRINCE DEATH-HEALTH - Prince's personal chef says the singer seemed to be ailing the past couple of months, complaining of sore throats and an upset stomach and requesting more soups and smoothies. The chef's description adds to conflicting accounts of how Prince looked in his final days.