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By Nia Williams CALGARY, Alberta (Reuters) - Fire raged unchecked through the Canadian city of Fort McMurray overnight as authorities raced to complete the evacuation of its population of 80,000, fearful that hot, dry winds forecast for Wednesday would further fan the flames. About 44,000 people were estimated to have fled the city by late on Tuesday on traffic-chocked roads, and the province of Alberta requested military help to bring the blaze under control and airlift others from fire- and smoke-filled streets. "I'm afraid that huge parts of my home town... may burn tonight and will continue to burn," Brian Jean, leader of Alberta's official opposition party, told CBC Radio, saying his own home was in the immediate path of the flames.
Brazilian prosecutors have filed a US$43.4 billion lawsuit against BHP Billiton and Vale over the Samarco mine dam burst that killed 19 and wreaked environmental havoc. The authorities "estimate the preliminary value for repairs to be 155 billion reals," the public prosecutor's office in the state of Minas Gerais said in a statement. Brazilian-owned Vale and Anglo-Australian BHP, which co-own the Samarco iron ore facility, had already agreed to a separate settlement of US$6.2 billion with the Brazilian government in March.
By Timothy Gardner WASHINGTON (Reuters) - President Barack Obama on Wednesday will visit Flint, Michigan, a city struggling with the effects of lead-poisoned drinking water, as questions linger over whether his environmental regulators could have acted more urgently to address the crisis. Obama will get updates from federal officials on the response in Flint, a mostly African-American city where more than 40 percent of the city's 100,000 people live in poverty. "Like you, I'll use my voice to call for change and help lift up your community," Obama wrote last week to Amariyanna Copeny, an eight-year-old Flint girl who has marched in protests about the crisis and had asked to meet him.