Mesa: Mouse Sperm Hooks

Mesa: Mouse Sperm Hooks

For The Scientist, Natalia Mesa (@natmesanash) explored the mystery of why the sperm of most mouse species have hooks on their heads. The bigger hooks slow down the sperm as they swim — so why are they there? Some scientists point to competition between sperm as a...

Seinfeld: Spermcycle Delivers

Learn about the Seattle Sperm Bank’s low carbon footprint delivery viagra canadian pharmacy system in this NPR story from Keith Seinfeld, KPLU health and science reporter and assistant news director, and NSWA board member. Check out the photo, too. It’s not every day...