Adventure and Exploration – Redwoods are the tallest living trees on the planet. One of the best places to see them is northern California's Redwood National Forest where two naturalists think they have found the world's tallest tree hidden among the many giants. One daring researcher climbs to the top to see how the tree measures up, learning much about the species along the way. 

 

 

GeoCast – Critically endangered, the majestic Philippine eagle is on the edge of extinction. Habitat loss and hunting have devastated the species. On the Philippine island of Mindanao, researchers and volunteers work to create a viable captive breeding program with the ultimate goal of releasing the captive-bred birds into the wild. 

 

 

At more than 29,000 feet, Mount Everest is the ultimate challenge for mountain climbers. But with extreme challenge comes extreme risk. More than a decade after a blizzard trapped eight climbers on Everest in one of the worst tragedies in modern day climbing history, "Wild Chronicles" heads to Nepal for the chance to climb into thin air with a mountaineering company that was on the mountain that fateful day. 

 

 

In the Central African Republic, a dedicated Wildlife Conservation Society field researcher studies a population of elephants drawn to a mysterious clearing in the forest. After 15 years of study, the conservationist has identified over 3000 forest elephants and can recognize as many as 600 by sight. But perhaps her most important finding: get close...just not too close.