Thien Quang Buddhist Pagoda, Vesak celebration, Birthday of Shakyamuni Buddha, bathing infant Buddha to purify the heart, Tan Chau, Vietnam

Traditional scene on River Ganges Hindu pilgrim pours Ganges water while praying at Varanasi, Benares, Northern India

In mid January 2015, a three day period of excessive rain brought unprecedented floods to the small poor African country of Malawi. It displaced nearly quarter of a million people, devastated 64,000 hectares of land, and killed several hundred people. This shot shows a specialist truck that takes water straight from the river and purifies it to drinking standards, which is then used in the many flood refugee camps in the Shire valley.

pilgrim bathing in the sacred pool Amrit Sarovar, Golden temple, Amritsar, Punjab, India

Barber shaving the head and beard of a pilgrim, Dashashwamedh ghat (main ghat), in Ganges river, Varanasi, Uttar Pradesh, India.

Pilgrims praying and bathing, in the ghats of Ganges river, Varanasi, Uttar Pradesh, India.

pilgrim bathing in the sacred pool Amrit Sarovar, Golden temple, Amritsar, Punjab, India

Pilgrims praying and bathing, in the ghats of Ganges river, Varanasi, Uttar Pradesh, India.

Pilgrims praying and bathing, in the ghats of Ganges river, Varanasi, Uttar Pradesh, India.

Men praying and bathing, in the ghats of Ganges river, Varanasi, Uttar Pradesh, India.

Baeber shaving the head and beard of a pilgrim, Dashashwamedh ghat (main ghat), in Ganges river, Varanasi, Uttar Pradesh, India.

Pilgrims praying and bathing, in the ghats of Ganges river, Varanasi, Uttar Pradesh, India.

Woman making offering, in the ghats of Ganges river, Varanasi, Uttar Pradesh, India.

Pilgrims praying and bathing, in the ghats of Ganges river, Varanasi, Uttar Pradesh, India.

Pilgrims praying and bathing, in the ghats of Ganges river, Varanasi, Uttar Pradesh, India.

A man praying, in the ghats of Ganges river, Varanasi, Uttar Pradesh, India.

pilgrim bathing in the sacred pool Amrit Sarovar, Golden temple, Amritsar, Punjab, India

Lavender floral water.

Kochi Prefecture, Japan

Kochi Prefecture, Japan

Sewage treatment plant, clearing sludge towers, twilight, Germany, North Rhine-Westphalia, Dortmund

Digestion tanks, sewage work, Emscher wastewater treatment plant, Bottrop, Ruhr area, North Rhine-Westphalia, Germany, Europe

Digestion tank, sewage work, Emscher wastewater treatment plant, Bottrop, Ruhr area, North Rhine-Westphalia, Germany, Europe

Professor with muscular dystrophy with engineering student and professor discussing log book for water distillation system in a laboratory

Professors explaining operation of water ultra purification system to engineering students in a laboratory

Professors explaining operation of water ultra purification system to engineering students in a laboratory

Professors explaining operation of water ultra purification system to engineering students in a laboratory

Drop of water

Drop of water