Let’s keep things simple two rules.
- No giving sentience, This is a no brainer issue.
- Let’s keep it to beings under the Animilia kingdom. “mutated virus/bacteria” is a common trope.
To start:
Let’s modify ants to have lungs.
Most insects are constrained by the amount of oxygen they can acquire through their exoskeleton.
Imagine how big they can get if they didn’t have that constraint?
Opposite monkey paw situation, as cows are no longer farmed due to the poison risk, global emissions are massively reduced. And the huge amounts of land dedicated to feeding cows is returned to forestry, further reducing emissions.
The poisonous cows solve climate change long before the vegans can.
How much does the cattle rearing industry contribute to global emissions?
According to the USDA, the US cattle industry contributes about 3.7% of US greenhouse gas emissions, and livestock as a whole is around 14.5% globally on a cursory search
You’re giving the vegans ideas now. Lol.