A pyrocumulonimbus cloud is seen over Argentina in an image acquired Jan. 29, 2018. (NASA) At a Glance A NASA satellite spotted a pyrocumulonimbus cloud over Argentina on Monday.The cloud was above a large wildfire burning in the La Pampa Province.Forests and grasslands are burned by thousands of wildfires each year in Argentina. Argentina's wildfire season has – yet again – devastated thousands of square miles in forests and grasslands, marching across the landscape in unstoppable fashion. Each year, some...