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ahead on "cnn newsroom," pulling out all the stops in pennsylvania. president biden teaming up with his former boss, barack obama, to get the pblue vote out, whil trump rallies republicans. it seems he has a new nickname for his most likely challenger to lead the party. we'll have details plus analysis from a former member of congress for the state. and destruction left behind in america's tornado alley. the latest from cnn's world weather center. >> announcer: live from cnn center, this is "cnn newsroom" with kim brunhuber. first, we are following a developing story out of easte...

Italian wine presents their own set of problems because Italy has a very regional wine industry that produces styles unfamiliar to the average American.

Cultural organization have found that dplash dpglaciers are set disappear by 2050. among the glaciers on the brink of vanishing are two of those in the most beloved national parks in the united states, yellowstone and yosemite, as well as mt.s kilimanjaro in africa. according to unesco, glaciers shed around 50 billion tons of ice each year, which is equivalent to the total volume of water used annually in france and spain combined. and these glaciers have already contributed nearly 5% of global sea level rise in the last 20 years. >> reporter: back in chile, in addition to melting ice, scien...