CRISPR: Rewriting DNA and the Future of Humanity

What is CRISPR? Developed in Berkeley in 2012, the CRISPR-Cas9 system lets scientists rewrite DNA in living cells and organisms, editing the genetic code that defines life itself. Powerful real-world applications are already happening. CRISPR expert and science communicator Megan Hochstrasser, from UC Berkeley's Innovative Genomics Institute, describes how genome editing works, what it can do, and how important it is to grapple with CRISPR’s ethical implications sooner rather than later.