chemical

Fracking is a method of mining that first became widespread in the US in the early 2000s, whereby a high-pressure mixture of water, sand and chemicals is injected into the ground.

Even before new tariffs, input costs like fertilizer, seed, chemicals, equipment and fuel were already at all-time highs, added Nick Levendofsky, executive director of the Kansas Farmers Union.

Most chemical reactions rely on heat to move forward, but light has recently become an important alternative.

Ketones appear throughout organic molecules, which is why chemists are eager to create new reactions that take advantage of them when forming chemical bonds.

Small farmers like Nkelane rarely have the means to buy tools or the chemical fertilisers and insecticides they deem necessary to improve their soil.