One more thing to worry about?a chunk of ice could plunge through your ceiling without warning. It’s happened twice recently, in Georgia and California. Homeowners think the ice is coming from airplane toilets, but Unknowncountry has found that while ice can fall from planes, it’s a result of global warming. Contrails, which are ice clouds composed of crystallized vapor trails, remain in the atmosphere longer these days, because the lower atmosphere is retaining more heat, making the upper atmosphere colder. The ice can also be gigantic hailstones that occur when cloud tops reach extreme heights, and hit the cold air above the stratosphere. Pieces of these icy clouds and contrails fall through the atmosphere, getting bigger and bigger.read more