It’s all you need, really. There you are, in the middle of a field of ice and snow, filming polar bears and their not-so-subtle courtship ritual, and one of your cameras topples over. In this case, the remotely controlled “Blizzardcam”.
Riding on mini skis and propelled by a couple of fan blade motors, the Blizzardcam took a topple going over a bank of snow. It did not escape the notice of the curious courting polar bears. It’s a cute and interesting interaction, made all the more humorous by David Tennant’s narration.