Hawaii has one of (if the not the) largest solar farms in the world — and they use sheep for weed removal. We definitely should be reforesting land, but land that is already pasture has a lot of potential for regenerative agricultural practices which greatly increase the prairie’s carbon-capture potential. Particularly if animals are incorporated intelligently. One study showed that the panels themselves can actually help improve pasture soil.

Sheep produce methane which is far more harmful per unit mass than co2. I'm guessing sheep (especially plural) are less efficient than a fossil-fuel trimmer (maybe not after accounting for the carbon used to manufacture the trimmer?), but you could probably replace it with an electric trimmer and be even better off. Reasoning about carbon is hard.

It’s definitely tricky to reason about carbon. One potential improvement is the incorporation of seaweed into a ruminant’s diet, which can reduce their emissions by a third. There’s also progress being made on breeding sheep and cows that emit far fewer greenhouse gases. But it’s important not to ignore that the animals themselves play a key role in improving the soil (with proper management), which can lead to the storage of tons of carbon annually.

Methane dissipates in the atmosphere within ~12 years, CO2 takes hundreds to thousands of years.

Oh, interesting. TIL. Reasoning about emissions is hard.

if not for the problem of mitigating sand erosion, deserts seem well-suited for solar farms. I believe the statistic is that all the necessary power to power double humanity's electric consumption could be generated from a tiny patch of the Sahara---big enough to be seen from space, but tiny in the grand scheme of things (1)

(1) This is, of course, the foolish way to go about it, since distribution costs would be enormous and that kind of centralization is dangerous for a robust system. But it's a fun thought experiment to visualize the scale of the problem and the gap between the inefficiency of the modern system and potential improvements.

Battery operated trimmers have got very good. They used to be underpowered, but now they are as powerful (or more) and a lot quieter. I suggest that you ask for a modern battery replacement. Just make sure you get the battery in a backback, the battery is slightly heavier and lasts longer so you don't get as many breaks