Farmland birds, Crayfish, Paying for research, Biomass pollution

The burning of wood for energy - or biomass - is thought to be a clean, green alternative to fossil fuels. But in Worcestershire a farm with fourteen boilers is causing local people to fear for their health.
How do you make animal research pay? At the University of Edinburgh the world-famous Roslin Institute has created a new company with a £10 million investment to take their science into the marketplace.
An appeal is being made for volunteers to help a conservation project on the rivers of Exmoor. The invasive signal crayfish from North America is a threat to the native white-clawed crayfish as well as entire ecosystems. Now the National Park Authority needs more helpers to catch them and help reduce their numbers.
The results of this year's Farmland Bird Count are released this morning and according to the organisers, the Game and Wildlife Conservation Trust, it's good news for some of the UK's most endangered species, such as the yellowhammer.
Presented by Caz Graham.
Produced by Vernon Harwood.