Let's make this birthday one to remember.

73 years old (Born on August 31, 1951)

Happy Birthday, Brian Dale! May your day be filled with laughter, joy, and perhaps fewer sperm jokes than usual. Your groundbreaking discovery of the soluble sperm factor has certainly fertilized countless scientific discussions—proving once again that you're truly egg-cellent at what you do.

From authoring "Fertilization in Animals" to founding and editing Zygote journal (the ultimate embryology page-turner), you've consistently inspired colleagues worldwide. Here's hoping this birthday brings as much excitement as discovering a new cellular mechanism—but without all those late nights in the lab!

Cheers to another year of brilliant breakthroughs—and may your celebrations multiply exponentially!