News tagged with levels

Mercury pollution danger for arctic ivory gulls

A paper in Proceedings of the Royal Society B today says that mercury levels in arctic ivory gulls have risen almost 50 fold over the last 130 years. Scientists think this increase in mercury pollutants could ...

dateMar 20, 2015 in Ecology
shares58 comments 0

Arctic sea ice hits record low

Arctic sea ice has reached its lowest winter point since satellite observations began in the late 1970s, raising concerns about faster ice melt and rising seas due to global warming, US officials said Thursday.

dateMar 19, 2015 in Earth Sciences
shares95 comments 23