Revellers celebrate during the “Bloco da Lama”, a mud carnival, in Paraty, Brazil, on February 10, 2018. “Bloco da Lama” started in 1986 by teenagers playing with mud and became a traditional event at the historical city of Paraty. (Photo by Mauro Pimentel/AFP Photo)

A handout photograph provided by Brian Kubicki of Costa Rican Amphibian Research Center on 26 April 2016 shows a “Crystal frog”, Hyalinobatrachium dianae (H. diane). This frog was discovered by US biologist Brian Kubicki and Costa Ricans Stanley Salazar and Robert Puschendorf in a rainy forest of Costa Rican caribbean after 40 years without notice of any new example of this kind. (Photo by Brian Kubicki/EPA/Costa Rican Amphibian Research Center)

These pictures reveal the crumbling ruins of the famed Grand Orient Express, now hollowed-out and almost reduced to rubble. There are only a couple of the trains, launched in 1883, left in the world. This example stands dormant in Belgium, untouched from its last voyage in the winter of 2009. Rusty ceilings, moth-eaten seats and tattered floors capture its level of decay. A Rotterdam-based urban photographer Brian Romeijn managed to snap these pictures while exploring the area. (Photo by Brian Romeijn/IMP Features)

Jerome Flynn, who played Bronn on “Game of Thrones“, posed in a cage on London's Oxford Street on November 26, 2019 alongside the campaign group Farms Not Factories to raise awareness that most supermarkets and high street food chains are still sourcing their pork almost entirely from factory farms. Says Jerome "Factory Farming is one of the most horrific examples of how far we have strayed from our hearts in the relentless drive for profit and so called progress”. (Photo by Jeff Moore/Splash News and Pictures)

Injured horses huddle together in Oklahoma City on Monday. (Photo by Chris Landsberger/The Oklahoman)

Revellers parade for Gavioes da Fiel samba school during carnival in Sao Paulo, Brazil, February 6, 2016. (Photo by Paulo Whitaker/Reuters)

“Atheris is a genus of venomous vipers found only in tropical subsaharan Africa, excluding southern Africa. Confined to rain forest areas, many members have isolated and fragmented distributions. In an interesting example of convergent evolution, they show many similarities to the arboreal pit vipers of Asia and South America”. – Wikipedia

Photo: Atheris squamigera. (Photo by David Williams)

An authenticated contemporary copy of Leonardo da Vinci's Mona Lisa on display at the Prado Museum on February 1, 2012 in Madrid, Spain. Experts of the Prado Museum say the copy was painted at the same time as the Mona Lisa in Leonardo Da Vinci's studio by one of his students.