"Lebanon’s caretaker prime minister Hassan Diab said on Monday he was following up on an oil spill that may have originated from a ship passing near the Israeli coast and has now reached the southern shores of Lebanon."

"The largest U.S. oil refiners released tons of air pollutants into the skies over Texas this past week, according to figures provided to the state, as refineries and petrochemical plants in the region scrambled to shut production during frigid weather."

"Late last year, as winter approached and power companies prepared for cold weather, Gov. Greg Abbott’s hand-picked utility regulators decided they no longer wanted to work with a nonprofit organization they had hired to monitor and help Texas enforce the state’s electric reliability standards."

"Even as Texas struggled to restore electricity and water over the past week, signs of the risks posed by increasingly extreme weather to America’s aging infrastructure were cropping up across the country."

"Scientists have cloned the first U.S. endangered species, a black-footed ferret duplicated from the genes of an animal that died over 30 years ago."

"Miami-Dade County appears to be home to yet another new invasive species — this one a mosquito that was last officially documented in the Florida Keys 75 years ago."