On a sunny Monday morning in May, veteran arborist Eric Ong makes his rounds across the island of Singapore. Lean and tanned from years under the sun, Ong drives toward the city center. Along the way, before he’s even out of the car, Ong studies the canopies of green between the towers crowding out the sky in the city’s central business district, dominated by cool blue and gleaming grey. Ong is a custodian of the island’s trees, and his job is to check up on them. His first destination of…
