Let's make this birthday one to remember.

84 years old (Born on March 29, 1941)

Happy Birthday, James Hansen! You've spent decades warning us about climate change—talking to politicians who sometimes seemed hotter-headed than global warming itself. Your groundbreaking research at NASA's Goddard Institute and your inspiring teaching career at Columbia University have truly made you the rock star of environmental science (minus the leather pants).

Thanks for tirelessly reminding humanity that Earth isn't just a giant thermostat we can fiddle with carelessly. May this birthday bring fewer heated debates and more cool celebrations—and may all future forecasts predict sunny skies ahead... metaphorically speaking, of course!

Cheers to another orbit around our favorite planet!