odette currently has 45 wild animals in her care. she needs 80 kilos of food a week, plus cages, medicines, bandages, and a lot of time. she could not manage without donanations. >> do you ever stop working? >> no. yeah, when i sleep. >> but all the hard work pays off, especially on days like today, when healthy animals go back into the wild. >> goodbye. >> odette has been bridging the gap between humans and animals for 18 years. and perhaps, it's bob who's helped her to win the most hearts. >> our global ideas series is all about environmental and climate protection. this week, we go to tunisia, where the effects of climate change are becoming increasingly noticeable. in the area around kairouan, the soil is dusty. it's becoming g hard for farmes to cultivate their land. water has become a luxury. fewer and fewer farmers here have enough of it. >> for many people around the world, it's easy to imagine an unending supply of water. not so here. tunisian farmer, cherif chehaibi, needs a lot of water to irrigate his olive groves and veg