Authored by: Suri Wang Art by: Claire Ma The genetic code acts as the instruction manual for every living organism, determining traits such as eye color, skin tone, and sex. Over the past 50 years, scientists or researchers discovered a way to manipulate the code: genetic engineering, the deliberate alteration of DNA. In 2013, scientists approved CRISPR-Cas9, a precise gene-editing tool that modifies DNA at targeted sites. While genetic editing offers advances in treating neurological...