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.

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.