3

Jupiter

4

Okavango Delta, Botswana

2

Oink, Boink, Doink, and Huffo the Tougho

3

The Winklers' Holiday on Zoo Lovers Day

4

Chip's Tips on China

3

Uranus

3

The Winklers' Holiday on Zoo Lovers Day

4

Extreme Weather

2

The Three Little Pigs and the Power of Bricks

3

Mars

3

Neptune

4

Hurricanes

3

Saturn

4

Chip's Tips on Qatar

4

Maddy's Iowa Diary