There’s no perfect substitute for human blood

Life-saving advancements have come a long way, but engineering artificial blood has been a challenge. Nicola Twilley is a New Yorker contributor and co-host of the podcast Gastropod. She talks to Krys Boyd about the breakthroughs — and setbacks — in the quest for artificial blood, why it’s needed more than ever, and why eyes are on Big Pharma to finance it. Her article is “The Long Quest for Artificial Blood.”