Answer:
Dr. Jiankui shocked the world when he announced that twin girls Lulu and Nana had been born with modified DNA to make them resistant to HIV, which he had managed using the gene-editing tool CRISPR-Cas9 before birth. This enraged many scientists as it is inhumane and extremely risky and irresponsible to modify a human being's DNA. He was heavily criticized by many and lost his reputation in his field.
