"We're a front runner; I can't name another biological herbicide really. There are some in the books but I don't know if they're successful," says Claire Baker, CEO of Kuvu Bio Solutions, a company fighting weeds for African agriculture. Amid growing herbicide resistance globally, as well as faltering food security in Sub-Saharan Africa, Baker's father discovered the efficacy of a fungus called fusarium oxysporum to kill weeds without negatively impacting the local environment. Initially grown and distributed on toothpicks, the company has an interesting distribution model too, a common challenge across the continent.