Katalin Karikó, a Nobel Prize-winning biochemist, overcame countless obstacles to revolutionize medicine. Despite facing discrimination and skepticism, she persisted in her research on messenger RNA (mRNA). Her groundbreaking work led to the development of COVID-19 vaccines, saving millions of lives. Karikó's story is a testament to the power of perseverance and the importance of pursuing scientific discovery, even in the face of adversity.