Visit Your Local PBS Station PBS Home PBS Home Programs A-Z TV Schedules Watch Video Donate Shop PBS Search PBS

Episodes
Dangerous Catch Dirty Secrets Additional Episodes
border
TV Schedules About the Project For Educators Feedback border
border
National Geographic's Strange Days on Planet Earth
Get Involved
Little changes... with big results. border
border
PREDATORS
border Why Should I Care? border border

5 Reasons Why

Why Others Care
border What Do Experts Say? border border

From the Episode

Related Stories

Resources
border How Do I Measure Up? border border

Tools You Can Use

Interactive House
border What Can I Do? border border

Get Out There

Idea Exchange

Please note that links marked with Off-site Link are off-site links and will open in a new browser window.

PBS's Terms of Use.

border WHAT DO EXPERTS SAY? Edward Norton
border Strange Days on Planet Earth scoured the world to find its wild and bizarre stories featuring some of the planet's top researchers. From the polar wilds of the Yukon to the steamy Amazon jungles to the urban landscapes of Earth's booming metropolises and our own backyards, join investigators in the trenches and find out more about their work.
border border

From the Episode

Dig deeper into the topics from the "Predators" episode of National Geographic's Strange Days on Planet Earth. Meet the scientific detectives working on these gripping issues and learn about how they became interested in their line of work and what their hopes and fears are for the future.

border
Jaguars have disappeared from Lake Guri

The Lake Guri Experiment
Not long ago, most of the Lake Guri region in Venezuela was an unbroken expanse of green dominated by top predators like jaguars and harpy eagles. After a large hydroelectric project flooded much of the area and left predator-free islands in its wake, a world of change was ushered in.
» more   
border
Testing the Yellowstone Aspens

Wolves in Yellowstone Park
Between 1883 and 1917 more than 100,000 wolves were killed for bounty in Montana and Wyoming alone. By the 1970s they were listed as endangered in the US. At about the same time, aspens in Yellowstone stopped regenerating. Could the two be connected?
» more   
border
Water hyacinth in Lake Victoria

Algae Overruns Discovery Bay
In its heyday, Discovery Bay, Jamaica, like much of the Caribbean, teemed with life. At the top of the food web was a gamut of predators. Sharks, snappers, groupers and jacks cruised nearshore to feed, drawn by a tempting menu of reef herbivores like surgeonfish and parrotfish. Today that vibrant Discovery Bay lives only in photographs. The reef is blanketed by a suffocating layer of algae. What went wrong?
» more   
border
Checking water quality at a marine management area.

Marine Management Areas
The establishment of marine management areas that include no-take zones as well as closely regulated fishing and recreational grounds are providing promise for the world's oceans. The Caribbean Soufriere Marine Management area, located in St. Lucia, managed by Kai Wulf, is one of these inspiring places. Biologist Satie Airame is also involved in a similar reserve system off the California coast in the Channel Islands.
» more   

Need more info? Move on to Related Stories »


Site Credits   |   Privacy Policy
© Copyright National Geographic Television & Film. All rights reserved.