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The Canton Tower and skyscrapers are illuminated during a rehearsal for the 2023 Guangzhou International Light Festival on November 20, 2023 in Guangzhou, Guangdong Province of China. The 12th Guangzhou International Light Festival will be held from November 21 to 30. (Photo by Wu Wenjun/VCG via Getty Images)

The Canton Tower and skyscrapers are illuminated during a rehearsal for the 2023 Guangzhou International Light Festival on November 20, 2023 in Guangzhou, Guangdong Province of China. The 12th Guangzhou International Light Festival will be held from November 21 to 30. (Photo by Wu Wenjun/VCG via Getty Images)
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04 Dec 2023 05:00:00
The Aurora Borealis (Northern Lights) is seen in the sky in Ivalo of Lapland, Finland on September 27, 2019. (Photo by Alexander Kuznetsov/Reuters)

The Aurora Borealis (Northern Lights) is seen in the sky in Ivalo of Lapland, Finland on September 27, 2019. (Photo by Alexander Kuznetsov/Reuters)
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09 Oct 2019 00:01:00
The Aurora Borealis (Northern Lights) is seen in the sky in Ivalo of Lapland, Finland on September 27, 2019. (Photo by Alexander Kuznetsov/Reuters)

The Aurora Borealis (Northern Lights) is seen in the sky in Ivalo of Lapland, Finland on September 27, 2019. (Photo by Alexander Kuznetsov/Reuters)
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18 Jun 2022 04:40:00
A spot-billed pelican sits on a street light in Colombo on March 16, 2021. (Photo by Ishara S. Kodikara/AFP Photo)

A spot-billed pelican sits on a street light in Colombo on March 16, 2021. (Photo by Ishara S. Kodikara/AFP Photo)
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10 Jun 2021 08:11:00
A new LED light fixture is secured to the side of a lift as crews replace existing street lights

A new LED light fixture is secured to the side of a lift as crews replace existing street lights August 1, 2011 in Las Vegas, Nevada. The new energy-efficient fixtures are expected to reduce the city's annual electricity use by eight million kilowatt hours, saving about USD 400,000. The city estimates the LEDs will last about 15 years, nine years longer than the current lights. Funding for the project comes from federal energy conservation bonds and an American Recovery & Reinvestment Act grant. The city plans to replace all of its 50,000 streetlights after more funding is secured. (Photo by Ethan Miller/Getty Images)
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02 Aug 2011 14:27:00
Person viewing the Northern lights over the lava landscape, Reykjanes Peninsula, Iceland. (Photo by Arctic-Images/Getty Images)

A person viewing the Northern lights over the lava landscape, Reykjanes Peninsula, Iceland. (Photo by Arctic-Images/Getty Images)
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19 Nov 2016 11:30:00
A dog runs through a wood in the Autumn light, Scottish Borders. (Photo by David Cheskin/PA Wire)

A dog runs through a wood in the Autumn light, Scottish Borders. (Photo by David Cheskin/PA Wire)
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30 Oct 2013 11:05:00
A lighting bolt flashes in the sky as U.S. Army M1A1 Abram tanks roll through the desert

A lighting bolt flashes in the sky as U.S. Army M1A1 Abram tanks roll through the desert December 9, 2002 near the Iraqi border in Kuwait. (Photo by Joe Raedle/Getty Images)
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20 Sep 2011 12:45:00