Monopoli, Bari, Apulia, Italy

Aerial of the Roman Amphitheatre, UNESCO World Heritage Site, Orange, Vaucluse, Provence-Alpes-Cote d'Azur, France, Europe

Brazzaville, Republic of Congo

Chatral senge dorje rinpoche seated on a tiger skin, yonglesho, Nepal

Bishop blessing the palms,mass,Palm Sunday.Interior of Basilica Sagrada Familia, Barcelona, Catalonia, Spain

`Festa dels Traginers´, Feast of the muleteer in Balsareny. Accordionist. Balsareny. Comarca del Bages. Eix del Llobregat, Catalonia, Spain.

Fireworks at Plaza de Espav±a during La Merce Festiva, Barcelona. Catalonia. Spain

`Festa dels Traginers´, Feast of the muleteer in Balsareny.Toast of the carrier. Balsareny. Comarca del Bages. Eix del Llobregat, Catalonia, Spain.

`Festa dels Traginers´, Feast of the muleteer in Balsareny. Farrier. Balsareny. Comarca del Bages. Eix del Llobregat, Catalonia, Spain.

Interior of Basilica Sagrada Familia,nave, Barcelona, Catalonia, Spain

`Trabucaires´ (men armed with blunderbuss) at Bisbe street during La Merce Festival. Barcelona. Catalonia. Spain

Fireworks at Avinguda Reina Maria Cristina during La Merce Festiva, Barcelona. Catalonia. Spain

R?o Tinto, Andalucia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.

R?o Tinto, Andalucia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.

Reflections on Rio Tinto, near its source, Andalusia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.

Clay loaded with iron oxides and dried out, Rio Tinto, Andalusia, Spain *** Local Caption *** R?o Tinto ("Red River") is very acidic (Ph 2) and has a deep reddish hue due to iron dissolved in water. The acidity of the watercourse is linked to the drainage of pyrite, which is very present in the subsoil. Extremophilic and endemic bacteria and algae colonize the river bed, forming a fragile biofilm that evokes the hot springs of Yellowstone Park in the USA.