11 American geographic anomalies

Why activists have dyed rivers bright green throughout France

Coral reef larger than Delaware discovered in muddy Amazon waters

Olm eggs raise hopes for rare 'dragon' birth

The myth of the 'Cave of the Glowing Skulls’

Obama signs bipartisan ban on microbeads

Watch the seasons change in America's oldest river valley

Architecture firm proposes retractable ice rinks for the River Thames

Peru protects vast 'Yellowstone of the Amazon'

Run wild in this Chinese landscape pavilion that mimics a meandering river

Prophetic horsemen sculptures emerge from the River Thames

Opinions flow freely over Frank Gehry's Los Angeles River redesign