A global treaty bans development or stockpiling of biological weapons — but allows biodefense planning. Scientists are making dramatic progress with techniques for “gene splicing” – modifying the genetic makeup of organisms. This work includes bioengineering pathogens for medical research, techniques that also can be used to create deadly biological weapons. It’s an overlap that’s helped fuel speculation that the SARS-CoV-2 coronavirus was bioengineered at China’s Wuhan Institute… – Global Biodefense Photo: CDC / Dr. Scott Smith