The Canadian entrepreneur has always pushed the boundaries of gene editing, once attempting to turn horses into unicorns. Now she is set on modifying human embryos – something her controversial ex-husband was jailed for doing On a Friday evening in late April, Cathy Tie, the Canadian serial entrepreneur and self-styled “Biotech Barbie”, is centre stage at New York City’s famous Carnegie Hall, performing Saint-Saens’ Piano Concerto No 2 on a gleaming Steinway grand piano, accompanied by an orches