 Here are the top five women who advanced technology. Number five, Admiral Grace Hopper. Hopper invented the first programming language compiler. She also helped develop Kobal. Number four, Radio Joy Perlman. Perlman created the Spanning Tree Protocol, or STP, a network protocol used in network bridges. No STP, no internet. Number three, Hedy Lamar. The 1940s movie star also co-invented a method of frequency hopping for the radio guidance of torpedoes during World War II. The technique was later used in a lot of technology, including Wi-Fi. Number two, Mathematician Gladys West. West developed precise models of the Earth, which were critical in plotting the orbits of GPS satellites. At number one, Catalan Carrico. The Hungarian-American biochemist research into the therapeutic use of mRNA led to the discovery and development of mRNA vaccines, along with her colleague Drew Weissman. Those are just five. Help us expand the list in the comments. And if you can, help support us by Patreon.com slash DTNS. I'll see you there.