Plants and animals depend on Earth’s daily cycle of light and dark rhythm to govern life-sustaining behaviors such as reproduction, nourishment, sleep and protection from predators. Humans have radically disrupted this cycle by lighting up the night. It’s encoded in the DNA of all plants and animals. Chad Moore, formerly of the National Park Serviceįor billions of years, all life has relied on Earth’s predictable rhythm of day and night. “ When we add light to the environment, that has the potential to disrupt habitat, just like running a bulldozer over the landscape can.”
