An orphaned giraffe nuzzling a wildlife keeper at Sarara camp in Kenya, one of 70 pictures being sold by Prints for Nature (printsfornature.com) to raise money for work by the Conservation International charity. This giraffe was rehabilitated and returned to the wild, as a number of others have done before him. Right now, giraffe are undergoing what has been referred to as a silent extinction. Current estimates are that giraffe populations across Africa have dropped 40 percent in three decades, plummeting from approximately 155,000 in the late 1980s to under 100,000 today. (Photo by Ami Vitale/National Geographic)

The International Space Station (ISS) moving in front of the sun in November 2020 by astrophotographer Andrew McCarthy. These incredible photos capture the clearest images ever taken of the International Space Station (ISS) moving in front of both the moon and the sun. The photos, taken within days of one another, were captured in the space of less than a second, as the space station could be clearly seen zooming across against the bright backdrops of both moon and sun. Photographer Andrew McCarthy, from California, USA, said the photo of the ISS in front of the sun, in broad daylight, was “one of my trickiest shots ever”. (Photo by Andrew McCarthy/South West News Service)

A migrant worker wearing face masks to help curb the spread of the coronavirus walks up to a pedestrian bridge in Beijing, Sunday, December 6, 2020. Provincial governments across China are placing orders for experimental, domestically made coronavirus vaccines, though health officials have yet to say how well they work or how they may reach the country's 1.4 billion people. (Photo by Andy Wong/AP Photo)

Three pals pose for a picture on a night out in Liverpool city centre, United Kingdom on December 24, 2020. Festive boozers braved the cold in Liverpool and York – as millions down South rang in Christmas Day indoors due to Covid restrictions. (Photo by David Nelson/South West News Service)

A woman clatters pans to make noise after calls for protest went out on social media in Yangon on February 3, 2021, as Myanmar's ousted leader Aung San Suu Kyi was formally charged on Wednesday two days after she was detained in a military coup. (Photo by AFP Photo/Stringer)

Dancers warm up in the wings before performing in a full-dress rehearsal at the Moulin Rouge in Paris on September 8, 2021, two days ahead of the reopening of the cabaret following an 18-month closure amid the COVID-19 pandemic. Closed for a year and a half due to the pandemic, the Moulin Rouge and Le Lido, emblems of the crazy Parisian nights since 1889, are finally reopening. (Photo by Christophe Archambault/AFP Photo)

A woman and her son hold firecrackers during Diwali, the Hindu festival of lights, in Mumbai, India, November 4, 2021. (Photo by Francis Mascarenhas/Reuters)

Steam comes out of the chimneys of the coal-fired power station Neurath near the Garzweiler open-cast coal mine in Luetzerath, Germany, Monday, October 25, 2021. The climate change conference COP26 will start next Sunday in Glasgow, Scotland. (Photo by Michael Probst/AP Photo)