Scotsman.com News - Sci-Tech - Spark of life creates 'ethical embryos':
"SCIENTISTS last night claimed to have made a major breakthrough in overcoming opposition to stem cell research by creating human embryos which cannot develop into babies.
The so-called 'ethical' embryos have been created by using an enzyme dubbed the 'spark of life' which tricks human eggs into believing they have been fertilised even without the presence of sperm."