Mwalua, who is a pea farmer in his local village, came up with the idea after seeing firsthand the grim toll climate change has taken in his native land. In the last year especially, he says, the area has seen precious little precipitation, leaving animals to die of thirst in these cracked lands.
"We aren't really receiving rain the way we used to," he says. "From last year, from June, there was no rain completely. So I started giving animals water because I thought, 'If I don't do that, they will die.'"