Toxic Algae Blooms May Be Longer, More Intense Due To Climate Change

SEATTLE -- Toxic algae blooms appear to be increasing in frequency and intensity around the country, but the full range of their causes -- and their health effects -- remains far from clear. Some experts, meanwhile, are suggesting that lakes, rivers and ponds that breed such blooms are becoming more hazardous thanks in part to a warming planet.

Green Lake, a popular local recreation destination, is no exception. Nearly every morning, Garet Munger and his little black dog, Charlie, make the 3-mile trek around the lake -- which is currently more than living up to its name.

Lake Erie's Toxic Algae Bloom Seen From Space: Green Scum Rampant In The Great Lakes (PHOTOS)

Toxic algae is sucking the oxygen out of Lake Erie.

The lake is currently undergoing one of the worst algae blooms in decades, turning the water a scummy bright green. According to NASA, blooms like this did occur in the 1950's and 60's, but now phosphorus from farms, sewage, and industry have fertilized the waters.

After the 60's, increased regulations and improvements in agriculture and sewage treatment limited the phosphorus and helped to control the blooms. However, the shallower Western basin near Detroit has been more susceptible to the algae than other deeper areas.

The exact reason behind the bloom is a bit unclear, but scientists believe it could be linked to increased rainfall and, believe it or not, mussels. It seems the types of mussel, zebra and quagga that have invaded the lake feed on phytoplankton instead of algae, making it even easier for the blooms to occur, according to NASA.