Explosive dam removal promotes salmon migration

This incredible video shows timelapse footage of the demolition of the 40 metre high Conduit Dam on the White Salmon River in Washington State, USA.  Ecologists hope that the dam removal will allow salmon to migrate upstream to spawn, previously impossible due to the impassable dam.  The return of salmon to the river’s headwaters is hoped to improve the health of the wider ecosystem (more on this phenomenon here).

Read the full story on the National Geographic and the White Salmon Restored site.