Smoke from a wildfire cloud the air near the settlement of Kustarevka in Ryazan region, some 340 km (211 miles) southeast of Moscow, August 10, 2010. Russia's deadly summer heatwave will weaken a recovery from last year's slump, economists predicted on Tuesday as wildfires raged on in several provinces and forecasters said sweltering weather won't abate this week.[Photo/Agencies]