These are some of the stories we’ve been following this week.

Front of buildings in the Hansa quarter of Bergen in Norway. By Hofi0006 (Own work). GFDL or CC-BY-SA-3.0, via Wikimedia Commons.

• Norway’s sovereign wealth fund is well below its risk limit. The $940 billion fund is the largest sovereign wealth fund in the world.

• Property values in Milwaukee, Wisconsin are up from last year by 4.5 percent. Property values as a whole in the city have increased all of the last four years.

• Methane emissions in Canada are higher than originally believed, according to two new reports.

• A lawsuit filed by the U.S. Attorney’s Office alleges that a horse racing track illegally poured pollutants into a canal along the Intracoastal Waterway in Florida.

• A new device that uses nanotechnology could change how oil spills are cleaned up in the future.

• The Supreme Court of Virginia is currently listening to a case that could have significant effects on eminent domain in the state.

• Youth summer camps in Flint, Michigan were canceled because the camps were near where crews were working to remove coal tar from the Flint River.

Creosote contamination along the Bow River in Calgary, Alberta has proven to be a tough mess to clean up.