Brown eyes or blue – take your pick! Gene editing now makes it possible to choose certain attributes in a baby long before it's born. It may be possible, but it's also illegal - at least in Germany.
Is it right to hack the genes of an unborn child to reduce its risk of developing cancer or some other debilitating or fatal disease? British medical experts say it could be, if certain conditions are met.
Researchers in the US have used an experimental gene-editing technique to correct a mutation in dozens of embryos. Some hailed the development as illuminating and surprising; others say it crossed a moral line.
It's tough predicting the future, especially when people expect you to be right. But that hasn't stopped Britain's Astronomer Royal, Lord Martin Rees. Rees spoke to DW about his new book, "On the Future."
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