a really interesting study that has uncovered a mystery that i think everybody knew hippos are important they didn't know this particular really interesting story behind why he pulls us important raising awareness about the key role he plays playing is vital to this frightful research of say without the creatures the system will be thrown out of balance with dire consequences for people and the environment. now here's a riddle for you what do hippo poop and mobile phones have in common anyone out there know while they both contain silicon. you're right that sounds like a fun fact that's worth sharing with our friends and colleagues mobile phones actually can save a lot of different metals and minerals and many of them can be recycled but as is often the case with high tech inventions plenty of the parts end up in the way stuff in this week's doing your bit we see how an artist is giving life to