If current server doesn't work please try other server below.

• S4.E1 ∙ Rivers and Streams
• S4.E2 ∙ Nutrition
• S4.E3 ∙ Marine Mammals
• S4.E4 ∙ Earthquakes
• S4.E5 ∙ NTV Top 11 Video Countdown
• S4.E6 ∙ Spiders
• S4.E7 ∙ Pollution Solutions
• S4.E8 ∙ Probability
• S4.E9 ∙ Pseudoscience
• S4.E10 ∙ Flowers
• S4.E11 ∙ Archaeology
• S4.E12 ∙ Deserts
• S4.E13 ∙ Amphibians
• S4.E14 ∙ Volcanoes
• S4.E15 ∙ Invertebrates
• S4.E16 ∙ Heart
• S4.E17 ∙ Inventions
• S4.E18 ∙ Computers
• S4.E19 ∙ Fossils
• S4.E20 ∙ Time