The International Dark-Sky Association (DarkSky) is the recognized worldwide authority combating light pollution. Our mission is to restore the nighttime environment and protect communities and wildlife from the harmful effects of light pollution through outreach, advocacy, and conservation. Thanks to more than 193,000 supporters, members, and advocates in more than 70 countries, we provide leadership, tools, and resources for individuals, policymakers, and industry, to reduce light pollution and promote responsible outdoor lighting that is beautiful, healthy, and functional. DarkSky works to achieve its mission through a variety of programs and initiatives, including: International Dark Sky Places. We certify and help conserve starry sky parks, communities, and other places around the world for humans and wildlife. There are more than 200 certified places protecting 160,000 square kilometers of protected land and night skies in 22 countries on 6 continents. DarkSky Approved lighting. We work with manufacturers and retailers to evaluate and certify dark sky friendly outdoor lighting for commercial, industrial and residential uses. Advancing responsible outdoor lighting. We work with citizens and elected officials to prioritize night sky protection and quality lighting through policy positions, public education, scientific research, and partnerships. Light pollution education. We inform the public how excessive artificial light harms wildlife, humans, and our climate. DarkSky coordinates a signature event every spring called International Dark Sky Week. The event, held in April during the week of the new moon, invites people worldwide to reconnect with the benefits of a dark, star-filled sky and learn how to reduce the negative impacts of light pollution to humans, wildlife, and ecosystems.