March 22 is World Water Day, a United Nations-led initiative bringing attention to the importance of universal access to water, sanitation and hygiene. An annual occurrence, the theme for World Water Day in 2018 is “Nature for Water,” which explores nature-based solutions to the water challenges we face in the 21st century. Efforts such as planting trees to replenish forests, restoring wetlands and reconnecting rivers to floodplains are sustainable, cost-effective ways to mitigate the effects of climate change – thereby improving human health.