79 years old (Born on May 11, 1946)
Happy Birthday, Robert Jarvik! The man who gave new meaning to putting your whole heart into your work—quite literally. With the revolutionary Jarvik-7 artificial heart, you've helped countless hearts safely tick another day. Rumor has it you're secretly working on a special "party mode," so we can all celebrate knowing our beats per minute won't throttle at the sight of birthday cake!But in all seriousness, thank you for continually advancing medical technology and giving people second chances at life (and laughter). May this year's milestone inspire even more groundbreaking innovations—and perhaps fewer dad jokes about "heartfelt wishes." Cheers!