Green Hour

Green Hour

Green Hour is a core concept of the U.S. National Wildlife Federation's Be Out There campaign. The campaign was created in response to a growing disconnect between nature and children, a condition dubbed nature deficit disorder by Richard Louv in his book Last Child in the Woods. One of the primary symptoms of nature deficit disorder, according to Louv, is the replacement of outdoor activities with "screen time"—hours that are spent in front of computers, televisions and other electronic devices.

Hour

An hour is a unit of time historically reckoned as 1⁄24 of a day and defined contemporarily as exactly 3,600 seconds. There are 60 minutes in an hour, and 24 hours in a day.

Green

Green is the color between cyan and yellow on the visible spectrum. It has 295–350 different shades. It is evoked by light which has a dominant wavelength of roughly 495–570 nm. In subtractive color systems, used in painting and color printing, it is created by a combination of yellow and cyan; in the RGB color model, used on television and computer screens, it is one of the additive primary colors, along with red and blue, which are mixed in different combinations to create all other colors. By far the largest contributor to green in nature is chlorophyll, the chemical by which plants photosynthesize and convert sunlight into chemical energy. Many creatures have adapted to their green environments by taking on a green hue themselves as camouflage. Several minerals have a green color, including the emerald, which is colored green by its chromium content.

green

Noun

1. The color of grass and leaves; a primary additive color midway between yellow and blue which is evoked by light between roughly 495–570 nm.
2. A member of a green party; an environmentalist.

Adjective

1. Of a green hue.
2. Sickly, unwell.

hour

Noun

1. A unit of time of one twenty-fourth of a day (sixty minutes).
2. A season, moment, or time.