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Natural Resources Wales and Innovate UK set a competition to look for technology that would clean up these rivers.

One of the winners was Steve Skill from Swansea University, who has come up with some biotechnology that uses algae to suck the poison out of the rivers. The Championships at Wimbledon start next week, and whatever the weather, the grass has to be perfect. Adam Rutherford headed to London's SW19 to find out how the ground staff are using scientific evidence to cultivate the courts.

Oct 07, Load More. But skeletal muscles turn out to be quite different to heart muscles, as consultant cardiologist Dr Rohin Francis explains. Heart cells are more efficient and don't get fatigued like skeletal muscle cells. They are extremely energetic and 'just want to beat'. He also explains that the sensory feedback from the heart muscles is different too.

They have a different sort of nerve supply, with fewer sensory nerves, so that there is less chance of pain signals being sent to the brain. However, heart cells' incredible abilities are counterbalanced by one Achilles-like flaw: They cannot easily heal. His job is to fix broken hearts and he explains to Adam how new research into stem cells could be used to fix normally irreparable heart cells. Asks Neil Morton in Stirling.

Rutherford and Fry learn about the special hydrogen bonds that makes water such an unusual liquid. Quantum physicist Professor Patricia Hunt, at the Victoria University in Wellington in New Zealand explains to Hannah the quantum properties of individual water molecules and how they link up with other water molecules in liquid water and solid ice.

Physicist Dr. How do guide dogs know where they're going? It's not like their handler whispers in their ear and asks to go to the pharmacy, maybe the toothpaste aisle. So how does it work? Dogs and humans have gone paw in hand for thousands of years.

But dogs were only first trained as guides for blind people in the UK 90 years ago. She meets up with expert Graham Kensett to find out what it takes to make a guide dog from nose to tail, starting from before birth and following the life course through to retirement. Hannah also meets the delightful Wendy and Wilmott, a German shepherd and a retriever cross. Despite both still growing into their ears, they show her their already extraordinary skill set, from tackling obstacle courses to safely crossing roads.

Cool, calm, patient, unflappable: Guide dogs are the astronauts of the canine world. Richard Lane has owned guide dogs for over 25 years, and confirms this first hand.

He reveals just how he gets to the toothpaste aisle, and tells Adam how at its peak a partnership can navigate London Waterloo station better than some sighted people, even at rush hour. Richard also explains how deeply felt the bond that forms between owner and dog is, and describes the hardest part of guide dog ownership: Letting go at the end. Apple Podcasts Preview.

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