Ah, "journalism" these days...

That was a video of a Swedish company that is experimenting with using hot water, instead of water mixed with ethylene glycol, which is what most de-icing sprays use. It's interesting that they are getting good results, but once you hit a certain temperature, water alone isn't going to work.

Ethylene glycol, while poisonous, breaks down pretty quickly when exposed to the elements. So, as long as they aren't spraying it where there are people, it really isn't a big deal.