You’re probably thinking of Bill Nye’s angry climate-change rant from Last Week Tonight with John Oliver in 2019, where he says the planet is “on fire” and shows a much harsher, older-feeling version of himself.

What it is

  • It’s not a scripted “Bill Nye gets old” sketch so much as a viral TV segment where he delivers a very serious warning about climate change.
  • The clip spread because it felt like a dramatic contrast to his usual upbeat Science Guy persona.

Why people remember it

  • He appears visibly intense and frustrated, which is probably why people describe it as “older and pissed off”.
  • The segment became widely shared online as a reaction clip and climate-change meme.

Best match

  • If you want the exact viral video, search for: “Bill Nye the planet is on fire Last Week Tonight” or “Bill Nye climate change rant”.

TL;DR: it’s the 2019 Last Week Tonight climate-change rant, not a separate old-age video.