The structure of this feels off, the punchline already happened in panel two and the text in panel three isn't adding anything. A panel 3 without text would be funnier imo because it would let the joke soak, I also think moving the punchline to panel 3 would have worked better.
I think the punchline is him opening the vat so it can kill humanz and solve the climate crisis, without the third one it could just be him inventing random stuff/wasting money (I only got the joke on panel 3)
This is why the fantasy of asking AI to solve global warming will either end up with no benefit (possible) or with us being converted to carbon-neutral paperclips.
Okay! Climate change is the largely man-made phenomenon of the Earth's temperature gradually increasing, leading to more severe weather events and mass species extinctions. To solve climate change, here's what you should do: plan that only vaguely helps on the individual level assuming it's coherent at all
I interpreted it a bit differently. He made the sharkpeople so we can inhabit the rising oceans, in a way. Climate change isn't getting solved, so might as well force us to adapt.