Access to this video is a benefit for members through PBS Passport.
Up Next
Back to Show
Changing Seas
Toxic Algae: Complex Sources and Solutions
Season 9
Episode 902
Lake Okeechobee was once the blue heart of Florida, pumping fresh water down to the Everglades and beyond. Now that a dike and canal system control its flow, water releases from the lake periodically creating putrid mats of blue green algae. Scientists think water pollution is to blame, and if something isn’t done about it there could be irreparable damage to the environment.
Support Provided By
Unlock with PBS Passport
26:42
Researchers brave the Arctic’s cold and dark to reveal the mysteries of the Polar Night.
Unlock with PBS Passport
26:42
Amid shipwrecks and shifting sands, Bermuda’s corals offer clues to climate resilience.
Unlock with PBS Passport
26:42
Knowledgeable fishers collaborate with scientists to keep sharks abundant.
Unlock with PBS Passport
26:42
Researchers and citizen scientists document the fascinating lives of seashells.
Unlock with PBS Passport
26:42
Experts are working to conserve and restore the Puget Sound’s declining kelp forests.
Unlock with PBS Passport
26:42
Scientists study the body size and health of humpback whales across their migratory cycle.
Unlock with PBS Passport
26:42
Experts study declines in the number of humpbacks migrating between Alaska and Hawaiʻi.
Unlock with PBS Passport
26:47
Scientists employ creative solutions to restore and reconnect Florida’s mangroves
Unlock with PBS Passport
26:42
Scientists study salt marshes along scenic coastlines in the South.
Unlock with PBS Passport
26:42
Scientists team up with anglers to study the survival rates of the fish.