A stray dog sits near Olympic volunteers in Olympic Park ahead of the 2014 Winter Olympics, Thursday, Feb. 6, 2014, in Sochi, Russia. (AP Photo/Robert F. Bukaty)
A carved elephant tusk, center, lies among about 698 elephant tusks, before being crushed into dust, at the foot of the Eiffel Tower in Paris, Thursday Feb. 6, 2014. France is crushing more than 3 tons of illegal ivory in Europe's first destruction of a stockpile of the banned elephant tusks. Thursday's pulverization is intended to send a message to poachers and traffickers that preservationists hope will help stem the illicit trade that endangers the species' survival. (AP Photo/Remy de la Mauviniere)
A woman wears a bow in the colors of the Russian flag during the women's snowboard slopestyle qualifying at the Rosa Khutor Extreme Park ahead of the 2014 Winter Olympics, Thursday, Feb. 6, 2014, in Krasnaya Polyana, Russia. (AP Photo/Andy Wong)
Shimla: People take a walk during light snowfall in Shimla on Thursday. PTI Photo (PTI2_6_2014_000133A)
A man passes a graffiti in Athens, Thursday, Feb. 6, 2014. Greek artists have made use of disused warehouses and building facades to display their artwork, often related to the country's acute financial crisis. (AP Photo/Dimitri Messinis)
Members of a Russian honor guard raise a flag of Spain during a welcoming ceremony at the 2014 Winter Olympics, Thursday, Feb. 6, 2014, in Sochi, Russia. (AP Photo/Morry Gash)
An Amur tiger plays in the snow at the Sedgwick County Zoo in Wichita, Kansas. Photo: AP
Fishermen clean their fishing net in the hometown of sea survivor Jose Salvador Alvarenga, Garita Palmera, El Salvador. Photo: AP
People listen to actor Eric Bogosian speak during a candlelight vigil for actor Philip Seymour Hoffman at the Bank Street Theater, home of the Labyrinth Theater Company in New York. Hoffman died Sunday of a suspected drug overdose. Photo: AP
People crowd CenturyLink Field to watch the parade for the NFL football Super Bowl champions in Seattle. Photo: AP
Snow-capped pilings dot the Brooklyn waterfront with the Manhattan skyline in the background in New York. Gov. Andrew Cuomo declared a statewide state of emergency, closing Interstate 84 between the Connecticut and Pennsylvania borders until midafternoon. Photo: AP
Coal ash swirls on the surface of the Dan River as state and federal environmental officials continued their investigations of a spill of coal ash into the river in Danville. Photo: AP