Sudanese farmers have been tapping thorny acacia trees for decades, with one reward in mind: to harvest the prized “gum arabic” resin. These golden beads are near irreplaceable in the global industry, used in everything from soft drinks to chewing gum and pharmaceuticals. But in the harsh drylands where farmers struggle to cope with the arid climate, many are reluctant to take up the arduous profession, considered unrewarding, especially by the youth.