Images Dated 19th December 2006

Sightseers climb the lower arch of the Sydney Harbour Bridge

Sightseers climb the lower arch of the Sydney Harbour Bridge December 19, 2006. The single span bridge, affectionately nicknamed the "Coathanger" by Sydneysiders, was built in 1932, and spans 503 metres (1650 feet) across the harbour and towers 134 metres (440 feet) above the water. REUTERS/Tim Wimborne (AUSTRALIA) - GM1DUEQLSGAA

para-Dichlorobenzene molecule

para-Dichlorobenzene. Computer model of a molecule of the chlorinated aromatic para-dichlorobenzene (PDB). It is an organic chemical, and is used as a pesticide. It primary use is in mothballs, where it is a substitute for naphthalene (see A705/079). PDB is marketed under names such as Paramoth, Para crystals, and Paracide. It is a toxic substance that can kill through volatile substance abuse. The molecule consists of two chlorine atoms attached to a benzene ring. The molecule's chemical formula is C6.H4.Cl2. The atoms are shown as colour-coded spheres in this space-filled model: carbon (blue), hydrogen (gold), and chlorine (green)

© DR MARK J. WINTER/SCIENCE PHOTO LIBRARY

Australia-Animals-Jellyfish

Two Brown Sea Nettle jellyfish are displayed in a tank of the Melbourne Aqarium, 19 December 2006. The jellyfish which live in the Pacific and Indian oceans are only midly dangerous to humans, are part of the Creepy Creatures exhibition which features the world's largest crabs, including Coconut Crabs as the exhibit's main stars, with leeches, scorpions, centipedes, Giant Burrowing Cockroaches, Christmas Island Crabs, Horseshoe Crabs and many others species. AFP PHOTO/William WEST / AFP PHOTO / WILLIAM WEST

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