Photos: Niagara Falls literally stopped in its tracks due to US chill

  [caption id=“attachment_1334737” align=“alignleft” width=“940”]  The U.S. side of the Niagara Falls is pictured in Ontario. The frigid air and “polar vortex” that affected about 240 million people in the United States and southern Canada will depart during the second half of this week, and a far-reaching January thaw will begin, according to AccuWeather.com. REUTERS[/caption]   [caption id=“attachment_1334739” align=“alignleft” width=“940”]  Visitors take pictures overlooking the falls in Niagara Falls. The frigid air and “polar vortex” that affected about 240 million people in the United States and southern Canada will depart during the second half of this week, and a far-reaching January thaw will begin, according to AccuWeather.com. REUTERS[/caption]   [caption id=“attachment_1334741” align=“alignleft” width=“940”]  The U.S. side of the Niagara Falls is pictured in Ontario. The frigid air and “polar vortex” that affected about 240 million people in the United States and southern Canada will depart during the second half of this week, and a far-reaching January thaw will begin, according to AccuWeather.com. REUTERS[/caption]   [caption id=“attachment_1334743” align=“alignleft” width=“940”]  The U.S. side of the Niagara Falls is pictured in Ontario. The frigid air and “polar vortex” that affected about 240 million people in the United States and southern Canada will depart during the second half of this week, and a far-reaching January thaw will begin, according to AccuWeather.com. REUTERS[/caption]   [caption id=“attachment_1334745” align=“alignleft” width=“940”]  The U.S. side of the Niagara Falls is pictured in Ontario, January. The frigid air and “polar vortex” that affected about 240 million people in the United States and southern Canada will depart during the second half of this week, and a far-reaching January thaw will begin, according to AccuWeather.com. REUTERS[/caption]   [caption id=“attachment_1334747” align=“alignleft” width=“940”]  The Rainbow Bridge shown in Niagara Falls, Ontario. The frigid air and “polar vortex” that affected about 240 million people in the United States and southern Canada will depart during the second half of this week, and a far-reaching January thaw will begin, according to AccuWeather.com. REUTERS[/caption]