The Russian economy's industrial sector is in decline, according to air-pollution readings from satellites.A Wall Street Journal report showed that the decline may be worse than what Moscow officially reports.Pollution in Russia's industrial regions fell 1.2% in the six months to April, and is 6.2% lower annually.Russia's economy is suffering from an industrial decline as Vladimir Putin's war in Ukraine drags on, according to a Wall Street Journal report citing data from the European Space Agency's Sentinel-5P satellite.