Hurricanes and deadly storms have hit multiple cities across the United States and Mexico.Four people died after Hurricane Isaias made landfall this weekend, and about 670,000 residents in Florida, Alabama, Georgia and Mississippi were still without power as the storm weakened to a post-tropical cyclone, according to local authorities and electricity monitoring services.Meanwhile, Hurricane Simon crept north-west just off Mexico's Pacific coast on Monday, lashing western states with winds and he...