News bites: Fracking pollution debated, refinery strike called off, and more

Union workers called off a strike at one of the world's largest refineries after ExxonMobil Corp. agreed to make safety changes, the Houston Chronicle notes.

A United States-Israeli group might have located another large natural gas deposit off Israel's coast, Reuters reports.

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China approved construction of the world's tallest dam, The Guardian reports.

The United Kingdom signaled it would support European Union imports of Canadian oil sands, The Guardian notes.