The predators of the Underwater Universe have evolved to become our planets most efficient killing machines. This episode explores the top five deadliest animals that no thinking human wants to tangle with, each more deadly than the next. But there is an unexpected twist, the

Recently, paleontologists unearthed the fossilized remains of a 35-foot, 240 million-year-old ichthyosaur in Nevadas Augusta Mountains and instantly knew this creature would have been the oceans top predator. Join the investigation as scientists attempt to understand where this unique creature fits in the evolutionary history of the first sea reptiles. Both in the lab and in the field, paleontologists search for clues to explain how a species that originally came from land transformed over millions of years into a purely aquatic creature.

Examines the history of military tactics, from blitzkrieg to blockage, pre-emptive strikes to fleet action and on to guerrilla warfare.

Sun, wind, and rain are basic to life, but sometimes the weather is more than just that. Sometimes its stronger, violent. The wind becomes a tornado, the rain a hurricane. The Earths atmosphere, for a moment, makes it uninhabitable. And theres nothing we can do about extreme weather but try to predict it, prepare for it and hope that it never happens here.
This DVD from the Discovery Channel looks at the innermost workings of a storm system to reveal the visible and invisible forces that drive our weather. Using the latest satellite imagery and 3D graphic animation, trade-winds, tornadoes, lightning, monsoon, and hurricanes are examined in detail. From the aurora borealis to the bizarre downpouring of fish and frogs, we learn that the earths atmosphere is a delicate and ever-changing environment. Finally we delve into the past to discover how earths volcanic origins helped create weather as we know it.

SUBMARINERS offers a "day in the life" of a submariner and profiles the amazing teamwork constantly performed, particularly in the nuclear sub, where safety is of vital importance. On a modern nuclear submarine, the distinction between night and day becomes a blur. Isolation, confinement, lack of privacy and intense pressure mark an endless cycle of six hour shifts. It is a world punctuated by constant attack readiness drills, tracking exercises and system checks. A world in which man no longer simply operates the weapon, he lives inside it, plotting the solutions and piloting the vessel on the most secretive of all military missions.

Ninety years ago, Britains teenage boys volunteered en masse to fight for their King and country. Such was their will to fight that a number of enthusiastic boys joined-up below the legal age to enlist. Now, new research reveals that these boy soldiers were not just a passionate handful but a significant proportion of Britains army. Additionally, the government has been found to have deliberately turned a blind eye to their enlistment.

Look at the way in which both the technology and the tactics of submarine warfare were adapted and developed during the Cold War, and how boats like the USS Virginia and the Russian Akula are todays most powerful and deadly naval units.

Out in deepest space lurks a force of almost unimaginable power. Explosions of extraordinary violence, are blasting through the Universe every day. If one ever struck our Solar System it would destroy our Sun and all the planets. For years no one could work out what was causing these awesome explosions. Now scientists think they have identified the culprit. Its the most extreme object ever found in the Universe; they have christened it a hypernova.