Ilia Ivanov was determined to find a way to hybridize humans and chimps, but the idea never should’ve made it beyond science ...

In 2021, scientists grew human stem cells in a monkey embryo, creating a human-ape hybrid. Is this mad science? Is it immoral, even criminal? Or could creating hybrids now help us defeat disease?

No one has yet cloned a human being, although the barriers to doing so are not so much scientific or biological as primarily ethical and legal. There is every reason to think that given a serious ...