this morning on "world news now" -- arctic blast. the powerful winter storm about to blast across much of the country putting millions in the deep freeze. accu-weather has the latest on the snowfall and the big chill. rail tragedy. a speeding freight train kills an adventurer just there admiring a view. at the wrong place at the wrong time and now the safety questions for thrill seekers. sky show. fireball plunging from the heavens. the meteor showers captivating the country and will soon be even more. later in "the skinny," no problem for ariana grande and nicki minaj taking home big honors.