Sri Lanka: A Bright Idea (8:33); United Kingdom: Emission Control (8:02); Palestine: Off Grid Aid (8:00); Credits: World Challenge: Episode 1 (0:11);
United States: Fungi Town (7:21); Thailand: Old School Thai (7:27); Afghanistan: Afghan Hands (8:08); Credits: World Challenge: Episode 2 (0:10);
Namibia: No Beating About the Bush (7:47); Haiti: Love 'n’ Haiti (8:17); India: Solar Sisters (9:17); Credits: World Challenge: Episode 3 (0:10);
Indonesia: Nothing Wasted (6:55); Kenya: Fuel Cell (8:39); Congo: Jiko Rescue (8:04); Credits: World Challenge: Episode 4 (0:10);
Kenya: Doubled Cooked (7:28); India: Burn After Eating (7:51); Malawi: In A Nutshell (6:53); Credits: World Challenge: Episode 5 (0:10);
Tanzania: OK Coral (6:51); Mexico: Saving From a Rainy Day (7:38); Denmark: Cyber Capital (7:39); Credits: World Challenge: Episode 6 (0:09);
The Philippines: The Only Way is Up (6:58); Zambia: Growth Cycle (7:37); Guatemala: A Class Apart (8:01); Credits: World Challenge: Episode 7 (0:09);
Madagascar: One Reef at a Time (7:32); Peru: Pass It On (7:54); Rwanda: Charge of the Light Brigade (7:26); Credits: World Challenge: Episode 8 (0:09);