The planet's hottest habitats - our deserts - are getting even hotter, drier and bigger, yet a host of remarkable animals still survive in the harshest conditions, including cunning hyenas, pint-sized meerkats and sand-dwelling spiders. Follow their lives through a single day in the desert to appreciate how they deal with the sun's formidable power as it grows stronger with every passing minute.
Episode rating
Cast of episode
100