1. Bright orange colors = very salty. Blue = lower saltiness.
2. Flying 400 miles above Earth, Aquarius can detect a change as little as a pinch of salt in a gallon of water.
3. Scientists are studying why some hurricanes that pass over the Amazon River plume of lower saltiness tend to get stronger.
TAG: Aquarius should help with El Niño forecasting as well.
More information: http://aquarius.umaine.edu/cgi/sci_results.htm