Tornadoes are one of nature's deadliest forces, unmatched in fury, speed and destructive power. Over the centuries, tornadoes have wrought destruction on a huge scale and cost a great many lives. This program takes a look at some of the most devastating twister storms to hit the planet in the last 100 years. From the world's worst twister (which struck Daultipur in Bangladesh in 1989), to the most expensive tornado in history (the 1999 Oklahoma Tornado...

Henry and his dog Mudge play in the snow, share a family Christmas dinner, and gather around a crackling winter fireplace.

A child describes some of the sights and sounds of winter.

When the summer visitors leave in the fall, a new group of visitors moves into the vacation cottage to spend the winter.

Follows a pair of birds on a snowflake-filled journey through a winter landscape, where everything everywhere, from branches and leaves to forests full of trees, is unique.

Tacky and his fellow penguins on Team Nice Icy Land train hard for the Winter Games, but Tacky's antics make their chances of winning a medal seem slim.

Fox does not like winter. None of his friends are around to play. He is bored and alone. Then Fox has an idea. If he cannot escape winter, he will fight it.

When Max the duck decides to stay behind when his flock flies south, Irene invites him to stay with her for the winter. Max the Duck feels right at home with the other animals when they help him get out of the cold.