2

Hot and Dry! Desert

4

Eire of the Desert

4

Desert

4

Eire of the Desert

3

The Winklers' Holiday on Zoo Lovers Day

4

Sphinx, Egypt

4

Ecosystems Level 4

4

Chip's Tips on Yemen

4

Maddy's Arizona Diary

4

Chip's Tips on Ghana

3

The Mystery of the Fairy Circles

3

Coastal Plains of the World

3

Marco Polo

4

Chip's Tips on Chile

4

Maddy's Utah Diary

2

Ecosystems

4

Maddy's New Mexico Diary

3

The Winklers' Holiday on Zoo Lovers Day

4

Okavango Delta, Botswana

4

Chip's Tips on Egypt

4

Petra, Jordan

4

Chip's Tips on Qatar

4

Chip's Tips on South Africa

3

Mars

4

Burj Al Arab, United Arab Emirates

4

Sossusvlei Dunes, Namibia

4

Chip's Tips on China

3

David Livingstone

4

Chip's Tips on Mexico

4

Maddy's California Diary