3/9. China. China is investing F60 billion in science ana technology over the next 15 years. It's been powering ahead in the life sciences, and is now world-class in fields such as stem cell research. Former Beijing correspondent Carrie Gracie returns to China to meet some of the Western-trained scientists there and discovers that not all of them follow international standards. Producer Arlene Gregorius Repeated on Monday at 8.30pm