Henry Rzemieniewski, cleaning operations manager for MetLife Stadium, gives a tour to clients of Tennant, which produces some of the cleaning equipment used at the stadium, Sept. 12, 2013. (Myles Ma/NJ.com) EAST RUTHERFORD — Some people struggle to clean up after themselves. Henry Rzemieniewski’s job …

Researchers are trying to determine if Trans-Nino years, which mark the onset or ebbing of El Nino and La Nina, are the main culprits behind deadly super-outbreaks of tornadoes. Fueled by a powerfully interconnected global atmospheric system, as sea-surface temperatures in the Pacific shift the …

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