Images Dated 16th September 2004

Tourists visit the Taj Mahal in the tourist city of Agra

Tourists visit the Taj Mahal in the tourist city of Agra, September 16, 2004. India is preparing to celebrate the 350th anniversary of the Taj Mahal, the 17th century marble mausoleum built by Mughal emperor Shah Jahan for his wife, later in the month. REUTERS/Kamal Kishore NO RIGHTS CLEARANCES OR PERMISSIONS ARE REQUIRED FOR THIS IMAGE KK/CP - RP5DRHXUNWAD

Diagram of cell wall & flagellum of Gram- bacteria

Diagrammatic representation of the cell wall, cell membrane, and a flagellum of a Gram-negative bacterium. Gram-negative bacteria have an outer lipopolysaccharide layer (above, yellow), as an outer membrane to the cell wall. Beneath it is the peptidoglycan cell wall, rigid & protective, made of sheets of glycan (sugar, white bricks) with peptide cross-links. The true cell membrane is at bottom (yellow, phospholipid). Pathogens attach to both membranes, molecules diffuse through, & anti- gens are found on them. The rotor mechanism of a flagellum is portrayed (red and blue); it rotates the flagellum like a propeller for movement

© FRANCIS LEROY, BIOCOSMOS/SCIENCE PHOTO LIBRARY

Japanese knotweed

Japanese knotweed (Fallopia japonica) growing rapidly after being cut back. Japanese knotweed is a tough, highly invasive perennial, that was introduced to this country by the Victorians. It grows to two to three metres high every spring, often crowding out native species, its roots grow at least as deep. It is incredibly hard to kill, as less than one gram of living rhizome, a horizontal underground stem, is needed to regenerate a plant. There are few chemicals that can destroy the plant, and biological control, the use of introduced fungi or insects, is now being considered in the UK. It is now illegal to plant Japanese knotweed in the UK

© SHEILA TERRY/SCIENCE PHOTO LIBRARY