New York, USA: Pan up view of digesters at a water treatment sewage works. Close up of the viwieng chamber of the treatment facility.

New York, USA: View over waste water plant in New York showing sewage works and treatment areas.

Southampton, England: Close up shot of clear water running along and bubbling up in a water treatment facility.

Close view of needle in glass dish in laboratory sucking up sperm for In Vitro Fertilization (IVF) treatment

General view of water bubbling up from treatment facility and entering circular concrete reservoir.

Southampton, England: Close up view of blue pipes, levers and pressure gauge inside a water treatment facility, zoom in to close up of water pressure gauge with a reading fluctuating between 0.85 and 0.95 bar.

Side view of female laboratory technician, with hair in bun and wearing green scrub top, using microscope in laboratory for In Vitro Fertilization (IVF) treatment, close shot of eye looking down microscope and of hand turning knob

UK: Dentist (wearing face mask) lowering drill towards camera, Dental patient having tooth worked on by dentist with drill, General view woman patient having teeth worked on by dentist as assistant stands by.

Korbous, Tunisia: Various views of the coastline around the spa town of Korbous showing deep blue sea, blue sky and mountain landscape. Wide view of the town and mid shot of the entrance to a spa.

Oxford, England: Forensic laboratory technician looking into electronic microscope

California, USA: Various shots of medical marijuana in labelled screw top jars and in cardboard boxes.

Close view of hand injecting upper arm of anonymous person with syringe and needle, then hand holds down piece of cotton wool on skin