Cloning and stem cells

Have you heard of stem cells? How about cloning? These new discoveries offer great promise for the future, but their use is still very controversial.

Bring back the Tasmanian tiger. Make organs to measure. Heal incurable diseases.

With cloning and stem cell research, we may be able to do these things one day. Reproductive cloning is already letting us of animals, and therapies based on stem cells are on trial. Scientists are also using these new techniques to better understand how a complete organism develops from one single cell.

		It is impossible to clone a dinosaur, and the chances of cloning a mammoth are pretty slim. Even if these extinct species were brought back to life, where would they live?