Have you ever wondered? Why don’t I keep on growing forever? Why do scientists want to modify cows? What is a stem cell and why do scientists think it is so valuable? Why do plants need hormones? Why have the International Olympics Committee (IOC) banned certain chemicals? How does scientific knowledge contribute to decisions regarding the termination of pregnancies? How can gene therapy help treat cancer sufferers? Why do ‘weeds’ always grow in the most awkward places?
