Musk Ox vs. Wolves - National Geographic video

Musk Ox vs. Wolves - NationalGeographic | January 10, 2011 | Musk oxen try to protect their young from a pack of arctic wolves.

Ready. Set. Ram Rumble! (NatGeo video)

NationalGeographic: Bighorn rams line up in the snow to battle for an Olympic-sized prize: mating rights.

Survival Guide - Elephant Charge - National Geographic Video

NationalGeographic | September 02, 2008 | In the African rain forests of Congo, conservationist Mike Fay is charged by a 3-ton elephant. What does Mike do to keep himself out of harm's way?

Survival Guide: Gorilla Attack (video)

Survival Guide: Gorilla Attack. NationalGeographic | January 10, 2011 | What's the best way to staty safe when a gorilla is charging at you?

The Last Lions - National Geographic video

NationalGeographic | January 10, 2011 | In Botswana's Okavango Delta, an ostracized lioness and her two cubs must fight alone to survive - overcoming all manner of hazard, from the raging wildfires on the Delta, to the jealousy of sister lionesses, to the marauding males who kill her mate, to the prey that becomes predator. Their only defense is to escape to Duba Island -- and with that, an unknown future.

World population to reach 9 billion in 2045 - can the planet take the strain? NatGeo video

National Geographic video: With the worldwide population expected to exceed seven billion in 2011, National Geographic magazine offers a 7-part series examining specific challenges and solutions to the issues we face. The magazine introduces the series with its January cover story "7 Billion," offering a broad overview of demographic trends that got us to today and will impact us all tomorrow. The first in-depth story will appear in the March issue, focusing on humans' impact on the planet's geology. Other stories will follow throughout 2011.

References:
7 Billion. By 2045 global population is projected to reach nine billion. Can the planet take the strain? National Geographic, 2011.

Inside the Vatican - National Geographic Video

NationalGeographic — Mar 16, 2009 — Season 1 Ep. 3 — A rare glimpse inside the secret archives and private chapels of the Vatican.

A Deadly Migration through Monterey Bay - NationalGeographic

A Deadly Migration through Monterey Bay. NationalGeographic — April 01, 2010 — Every spring, a series of epic battles are fought in the waters off America's west coast. It's the season when killer whales hunt their largest prey - gray whales that are migrating up the coast.

A Little Piece of Paradise - Costa Rica - NG Video

"Looking for a little piece of paradise? Set your sights on Costa Rica. With beautiful beaches, rainforests, and volcanoes, this tourist-friendly country has become a favorite stop for eco-trekkers and the surf set alike."