4

Desert

4

Eire of the Desert

2

Hot and Dry! Desert

4

Eire of the Desert

4

Chip's Tips on China

4

Chip's Tips on South Africa

3

The Mystery of the Fairy Circles

3

Marco Polo

4

Hoover Dam

4

Chip's Tips on Egypt

4

Chip's Tips on Chile

4

Patsy and Paul at Uluru in Australia

3

Coastal Plains of the World

4

Chip's Tips on India

4

Chip's Tips on Ghana

4

Maddy's Utah Diary

4

Polar

4

Okavango Delta, Botswana

4

Chip's Tips on Botswana

4

Chip's Tips on Qatar

4

Petra, Jordan

3

Mars

4

Chip's Tips on Mexico

4

Maddy's Oregon Diary

4

Burj Al Arab, United Arab Emirates

4

Timbuktu, Mali

3

The Winklers' Holiday on Zoo Lovers Day

2

Ecosystems

4

Chip's Tips on Nigeria

4

Maddy's Nevada Diary