1.   Some canals, such as the Rio Remedio, are so polluted that garbage floats on thick brown water.

2.   Garbage floated in stagnant water on this fragrant fragment of a vast coastal wetlands at the northwestern tip of the Yucatan Peninsula.

3.   Garbage floated on water on empty streets.

4.   Garbage floated in park ponds, and the stench of beer and urine hung over the area around the landmark Victory Column in central Berlin where the parade converged.