 You're listening to Tech Life from the BBC World Service with me, Chris Vallance. This week, the multi-million dollar competition that aims to find out if AI could help us talk to the animals. So, you know, you have, let's say, a machine, a speaker playing a sound and the bat responding and then the speaker responds accordingly. Say, that's the dream. Filtering microplastics out of water with ultrasound and traditional Indian drums get an electronic makeover. That's all to come after the latest world news.