During the last aerial waterfowl survey Dec. 21, more than 25,300 swans were still on the river, and 12,000 - or almost half of the total swans counted - were in the Wisconsin Islands Closed Area ...

The map is based on a U.S. Geological Survey database of the direction water is flowing at every point on Earth. ... the Amazon River is more than 400 miles longer than the Mississippi River alone.