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 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 O n a Friday evening in late April, Cathy Tie,