Nitrogen is Falling into Remote Lakes

People on this planet are producing ten times more nitrogen now than they did a century ago, and some of it ends up in far-flung lakes where it alters aquatic ecology.

Culverts Disconnect Fish Streams

Half the culverts placed in creeks of Alberta's boreal forest hang in mid-air, preventing fish from travelling upstream.

Some Creeks Highly Susceptible to Road Runoff

Most of the sediment from forest harvesting that ends up in creeks used for domestic water in British Columbia's Kootenay region originates from logging roads.

Ultraviolet-B Radiation Harms Aquatic Life

The first quantitative analysis of published studies on ultraviolet-B (UVB) radiation and water-borne life reveals that UVB causes widespread and devastating damage throughout aquatic ecosystems.

Agriculture Increases River Flows

Clearing forests to grow crops has added to the amount of water that runs off of land into rivers by 2.5% in North America and 6% in Asia over the last three centuries.