![A view of the darkened 'Welcome To Fabulous Las Vegas' neon sign is seen during Earth Hour in Las Vegas, Nevada, March 27, 2010. Countries around the world have signed up for A view of the darkened 'Welcome To Fabulous Las Vegas' neon sign is seen during Earth Hour in Las Vegas, Nevada, March 27, 2010. Countries around the world have signed up for](https://c8.alamy.com/compfr/2d2fd6m/a-view-of-the-darkened-welcome-to-fabulous-las-vegas-neon-sign-is-seen-during-earth-hour-in-las-vegas-nevada-march-27-2010-countries-around-the-world-have-signed-up-for-earth-hour-on-saturday-in-which-homes-office-towers-and-landmarks-will-turn-off-their-lights-from-8-30-pm-local-time-to-raise-awareness-about-climate-change-and-the-threat-from-rising-greenhouse-gas-emissions-reuters-richard-brian-united-states-tags-environment-cityscape-2d2fd6m.jpg)
A view of the darkened 'Welcome To Fabulous Las Vegas' neon sign is seen during Earth Hour in Las Vegas, Nevada, March 27, 2010. Countries around the world have signed up for
![The darkened 'Welcome To Fabulous Las Vegas' neon sign is seen during Earth Hour in Las Vegas, Nevada, March 27, 2010. Countries around the world have signed up for Earth Hour on The darkened 'Welcome To Fabulous Las Vegas' neon sign is seen during Earth Hour in Las Vegas, Nevada, March 27, 2010. Countries around the world have signed up for Earth Hour on](https://c8.alamy.com/comp/2E74YF0/the-darkened-welcome-to-fabulous-las-vegas-neon-sign-is-seen-during-earth-hour-in-las-vegas-nevada-march-27-2010-countries-around-the-world-have-signed-up-for-earth-hour-on-saturday-in-which-homes-office-towers-and-landmarks-will-turn-off-their-lights-from-830-pm-local-time-to-raise-awareness-about-climate-change-and-the-threat-from-rising-greenhouse-gas-emissions-reutersrichard-brian-united-states-tags-environment-cityscape-2E74YF0.jpg)
The darkened 'Welcome To Fabulous Las Vegas' neon sign is seen during Earth Hour in Las Vegas, Nevada, March 27, 2010. Countries around the world have signed up for Earth Hour on
![EMSC on Twitter: "⚠Preliminary info: #earthquake (#sismo) about 8 mi N of Las Vegas (#Nevada) 1 min ago (local time 20:06:05)❗MAGNITUDE NOT AVAILABLE YET❗Updates at: 📱https://t.co/LBaVNedgF9 🌐https://t.co/AXvOM7I4Th 🖥https://t.co/wPtMW5ND1t https ... EMSC on Twitter: "⚠Preliminary info: #earthquake (#sismo) about 8 mi N of Las Vegas (#Nevada) 1 min ago (local time 20:06:05)❗MAGNITUDE NOT AVAILABLE YET❗Updates at: 📱https://t.co/LBaVNedgF9 🌐https://t.co/AXvOM7I4Th 🖥https://t.co/wPtMW5ND1t https ...](https://pbs.twimg.com/media/Fd30B8PX0AAPYpx.png)
EMSC on Twitter: "⚠Preliminary info: #earthquake (#sismo) about 8 mi N of Las Vegas (#Nevada) 1 min ago (local time 20:06:05)❗MAGNITUDE NOT AVAILABLE YET❗Updates at: 📱https://t.co/LBaVNedgF9 🌐https://t.co/AXvOM7I4Th 🖥https://t.co/wPtMW5ND1t https ...
![A combination photo shows the 'Welcome To Fabulous Las Vegas' neon sign before (top) and during Earth Hour in Las Vegas, Nevada, March 27, 2010. Countries around the world have signed up A combination photo shows the 'Welcome To Fabulous Las Vegas' neon sign before (top) and during Earth Hour in Las Vegas, Nevada, March 27, 2010. Countries around the world have signed up](https://c8.alamy.com/compfr/2e74yey/a-combination-photo-shows-the-welcome-to-fabulous-las-vegas-neon-sign-before-top-and-during-earth-hour-in-las-vegas-nevada-march-27-2010-countries-around-the-world-have-signed-up-for-earth-hour-on-saturday-in-which-homes-office-towers-and-landmarks-will-turn-off-their-lights-from-8-30-pm-local-time-to-raise-awareness-about-climate-change-and-the-threat-from-rising-greenhouse-gas-emissions-reuters-richard-brian-united-states-tags-environment-cityscape-2e74yey.jpg)
A combination photo shows the 'Welcome To Fabulous Las Vegas' neon sign before (top) and during Earth Hour in Las Vegas, Nevada, March 27, 2010. Countries around the world have signed up
![A view of the 'Welcome To Fabulous Las Vegas' neon sign is seen before Earth Hour in Las Vegas, Nevada, March 27, 2010. Countries around the world have signed up for Earth A view of the 'Welcome To Fabulous Las Vegas' neon sign is seen before Earth Hour in Las Vegas, Nevada, March 27, 2010. Countries around the world have signed up for Earth](https://c8.alamy.com/compfr/2d2k7fx/a-view-of-the-welcome-to-fabulous-las-vegas-neon-sign-is-seen-before-earth-hour-in-las-vegas-nevada-march-27-2010-countries-around-the-world-have-signed-up-for-earth-hour-on-saturday-in-which-homes-office-towers-and-landmarks-will-turn-off-their-lights-from-8-30-pm-local-time-to-raise-awareness-about-climate-change-and-the-threat-from-rising-greenhouse-gas-emissions-reuters-richard-brian-united-states-tags-environment-cityscape-2d2k7fx.jpg)
A view of the 'Welcome To Fabulous Las Vegas' neon sign is seen before Earth Hour in Las Vegas, Nevada, March 27, 2010. Countries around the world have signed up for Earth
![EMSC on Twitter: "🔔#Earthquake (#sismo) M3.1 occurred 6 mi NE of Las Vegas (#Nevada) 4 min ago (local time 20:06:08). More info at: 📱https://t.co/LBaVNedgF9 🌐https://t.co/2ViUaWNi62 🖥https://t.co/QTE22u4Gqd https://t.co/rDdpr9tWX6" / Twitter EMSC on Twitter: "🔔#Earthquake (#sismo) M3.1 occurred 6 mi NE of Las Vegas (#Nevada) 4 min ago (local time 20:06:08). More info at: 📱https://t.co/LBaVNedgF9 🌐https://t.co/2ViUaWNi62 🖥https://t.co/QTE22u4Gqd https://t.co/rDdpr9tWX6" / Twitter](https://pbs.twimg.com/media/Fd30tBRX0AA2cM8.jpg)