>> Priest in the Vatican having a snowball fight, and that's especially unusual because it hasn't snowed in Italy's capital in 6 years. Scientist are calling the freak weather that's disrupting much of Europe, WACKY, an acronym for Warm Arctic Cold Continent. They say melting arctics sea ice exposing warmer water below releasing it's heat into the atmosphere.
Reuters' Alex explains how this is impacting the rest of the world.>> The idea is that the cold that's normally in the Arctic is being disrupted by this warmth from the oceans, which affects the jet stream, this great swirling current that goes around the planet in the Northern Hemisphere, eastwards, and that this becomes a more wavier, more loopy system which then pushes warm air northwards and cold air southwards.
The opposite of what is normally happens in winter.>> So as the Arctic experiences one of its warmest winters ever, Europe has experienced once of its coldest, causing scenes like these. Elite draft reports by the United Nations says this will soon be common territory, with predictions that there could be no more ice on the Arctic Ocean during summer months.
Already this year huge expanses of ocean have been left uncovered.>> The ice covering the Arctic Ocean gets to its biggest in March normally, but at the moment it covers 14 million square kilometers. That's slightly smaller than Russia, but it's a million square kilometers, which is the size of Egypt, smaller than it usually is in late February.
So it's way below. That's a record low for the ice at this time of year.>> Most climate scientists put this down to buildup of greenhouse gases from factories and cars, but a lack of data makes it hard to pinpoint exactly what's happening paving the way for skeptics, like US President Donald Trump, to abandon international efforts to curb climate change like the 2015 Paris Agreement.