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Ecuador's officials have upgraded their eruption warning level of the Tungurahua volcano started spewing out lava and ash. The volcano is a stratovolcano located in the Andes Mountains.

An Indian college student walks past a wall mural depicting a tiger in Bangalore on July 30, 2010. AFP PHOTO/Dibyangshu SARKAR

A presenter explains about Toyota Fun-Vii in Tokyo Monday, Nov. 28, 2011. Toyota Motor Corp. unveiled the futuristic concept car resembling a giant smartphone to demonstrate how Japan's top automaker is trying to take the lead in technology at the upcoming Tokyo auto show, which opened to the public recently. (AP Photo/Koji Sasahara)

Honda Motor Co. President Takanobu Ito stands near Honda's human-shaped robot "Asimo" at a press conference during the press preview of Tokyo Motor Show in Tokyo, Wednesday, Nov. 30, 2011. (AP Photo/Koji Sasahara)

Nurses stand to form a Red Ribbon while holding a banner to mark World AIDS Day at a medical school in Yangzhou, Jiangsu province, November 29, 2011. REUTERS/China Daily

An activist from a non-governmental organisation (NGO) lights candles during an AIDS awareness campaign on the eve of World AIDS Day in Agartala, capital of India's northeastern state of Tripura November 30, 2011. REUTERS/Jayanta Dey

A broker reacts as the Sensex surges, at the BSE building in Mumbai.

A boy receives medication at Nkosi's Haven, south of Johannesburg November 25, 2011. Nkosi's Haven provides residential care for destitute HIV-positive mothers and their children, whether HIV-positive or not. Nkosi's Haven is named after Nkosi Johnson, the young AIDS activist who passed away on International Children's Day on June 1st 2001. December 1 is World AIDS Day. Picture taken November 25, 2011. REUTERS/Siphiwe Sibeko (SOUTH AFRICA)

This dilapidated hall is Moti Galli, once the Royal treasury of the Nizams! File photo: Mohammed Yousuf

In 2010, the Department of Archealogy and Museums began a facelift of the Mecca Masjid. The mosque was the site of a terror attack in 2007. Photo: G. Ramakrishna

Philippe Priasso dancing with a mechanical digger during the show 'Transport Exceptionnels' organised at Ravindra Bharathi, in Hyderabad, on Tuesday. He says, “Although I was hurt several times, in the course of the dance we discovered the life within a machine. It was like a give and take between iron and flesh,” said Philippe Priasso. Photo: G. Ramakrishna

The dance recital by a group of Bharatnatyam (An Indian Traditional Dance) dancers holding candles in both hands and striking different postures while balancing a foot on a pot received wide appreciation. Photo: M. Subash

Children performing a themed dance at the inaugural ceremony of the 17th International Children’s Film Festival, ‘The Golden Elephant,’ in Hyderabad on Monday. Photo: K. Ramesh Babu

Participants at a rally to promote cycling in Coimbatore. The ‘Proud Cyclist' campaign was organized by Rotary Club as an effort to reduce carbon footprint. Photo: M. Periasamy

Common banded Peacock: A rare species sighted in Wayanad, Kerala, India

Southern bird wing: An endemic species to the Western Ghats, India

This file photo shows two polar bears on a chunk of ice in the arctic off Northern Alaska. Warming of the climate system is unequivocal, the cause is very likely man-made, and would continue for centuries. Global warming has been a growing alarm. Photo: AP

A caterpillar feeding on a leaf at the Bio-diversity Park situated in the heart of Visakhapatnam. According to a new study published in the journal 'Nature Climate Change', 38 of 85 animal and plant species showed a documented reduction in size over decades. The theory is 'as things get warmer they don’t need to grow as large'. Photo:K. R. Deepak

A dead bird is seen on the Mount Manganui beach after being washed ashore stained with fuel oil. The fate of fur seals as well as birds such as the endangered New Zealand dotterel seems worrisome as the oil in the ocean is going to be disaster for marine wildlife, for the people and for New Zealand.

Shipping containers float in the water around the cargo ship Rena that has been foundering since it ran aground on Oct. 5 on the Astrolabe Reef, from Tauranga Harbour, New Zealand. The condition of the stricken cargo ship that is leaking oil worsened on Wednesday, with about 70 containers falling overboard and the vessel moving onto a steeper lean. Photo: AP

Malaysian dancer-choreographer Ramli Ibrahim performing the Ramayana in the Odissi style at the Music Academy in Chennai. The epic known as 'Vilanka Ramayana' in Oriya, was written by Sarala Das — the father of Oriya literature. File Photo: V. Ganesan

Artists enact a scene from the Ramayana at Red Fort Ground in New Delhi, as a part of Dusshera celebrations. If Dusshera is synonymous with Goddess Durga in West Bengal, it symbolises Lord Ram's epic battle with demon Raavan, in North India. Photo: Shiv Kumar Pushpakar

Yakshagana artists presenting the 'Panchvati Prasang' of the Ramayana. Parthi Subba is believed to have written the Ramayana for Yakshagana (a Kannada dance drama form) in 15th century. File Photo: A.M. Faruqui

A scene from 'The Ramayana' portrayed by the Indonesian troupe 'Wayang Wong' in Tirumala. Kakawin Ramayana and Ravanavadham are popular versions of the Ramayana in Indonesia. Photo: The Hindu Photo Library

A Khon Yok Rob, the traditional Thai dance performance depicting the Ramayana battle between Ramakien and the giant Tosakan — as Ram and Raavan are known in Thailand. Photo: V.V. Krishnan

Kashmiri children warm their hands using kangris or traditional fire pots, on the banks of Dal Lake in Srinagar. Photo: Nissar Ahamed

Khiamniungan Naga men performing traditional war dance during the 12th Hornbill Festival celebration at Kisama village in Kohima, Nagaland. Photo: Ritu Raj Konwar

Artist Paulo Nazareth of Brazil poses with his piece featuring a Volkswagen Microbus filled with bananas during the Vernissage Art Basel Miami Beach, Wednesday, Nov. 30, 2011, in Miami Beach, Fla. (AP Photo/ Lynne Sladky)

After two hours of experimentation and tinkering with my cam, I came up with this shot. (Photograph courtesy Charley Elmaga/National Geographic Your Shot).

Sunrise with cypress trees in the Florida Everglades. (Photograph courtesy Clane Gessel/National Geographic Your Shot.)

In this photo taken with a fisheye lens, flames from a fire set alight in a container by activists with the Frankfurt Occupy movement are seen in front of the European Central Bank and a sculpture of the euro symbol in Frankfurt, Germany, Monday, Nov. 21, 2011. (AP Photo/Michael Probst)

A demonstrator wearing a Guy Fawkes mask popularised by the "Occupy" movement looks on during a demonstration in the Old Town Square of Prague. (AFP Photo/Michal Cizek)

SONEPUR, INDIA - NOVEMBER 14: A mahut sits on his elephant as it drinks water from the Ganges river during the the Sonepur Mela on November 14, 2011 in Sonepur near Patna, India. The cattle fair, held in the Indian state of Bihar, has its origins during ancient times, when people traded elephants and horses across the auspicious river Ganges. The mela used to attract traders from places as distant as Central Asia. It is one of Asia's largest cattle fairs and lasts for a fortnight. (Photo by Daniel Berehulak/Getty Images)

SONEPUR, INDIA - NOVEMBER 16: A boy rides a horse as he demonstrates its prowess to potential buyers during the Sonepur Mela on November 16, 2011 in Sonepur near Patna, India.