Killer venom and can sheep really recognise humans?

When you think of venom, exotic snakes and giant spiders probably come to mind. But venom is everywhere - in parks, gardens... even in the corners of your house! Ronald Jenner, a venom evolution expert at the Natural History Museum, tells us more about what venom is and why some smaller creatures are actually the most deadly!

Plus, we find out about one of the very first labs in space, discover why it's not such a good idea to put metal in the microwave, and explore whether sheep can actually recognise humans!