In this week’s newsletter: As settlements expand across northern Kenya, people and elephants are increasingly clashing over land, food and waterDon’t get Down to Earth delivered to your inbox? Sign up hereIt is remarkably hard to see an elephant in the wild. In Oldonyiro, northern Kenya, they pass through the settlement almost every night. Piles of dung appear metres from the primary school and local church each morning, where smooth circles have been padded into the earth by the enormous beasts shuffling past in the dark. But when I went looking for them in September, they were nowhere to be found. More after this week’s most important reads.How a radical experiment to bring a forest into a preschool transformed children’s health‘White-knuckled wolf spider’ thought lost is rediscovered on Isle of WightCarnivorous ‘death ball’ sponge among new species found in depths of Southern Ocean