During the last few years, carbonatites have received a considerable amount of attention. Some of this interest was no doubt kindled by the importance of volatiles in the Earth's mantle, particularly CO , by the fact that carbonatites 2 can be used to monitor the chemical evolution of the sub-continental upper mantle, and by the fact that carbonatites may be effective metasomatizing agents at both mantle and crustal levels. The interest in Oldoinyo Lengai has extended over at least 100 years, but it was not until the eruptions of 1960, when the unique carbonatitic nature of its lavas was recognized, that the volcano took on special significance in volcanology and igneous petrology. The recognition of carbonatitic flows coin cided with the first successful laboratory experiments carried out on carbonatitic melts. Since then, Oldoinyo Lengai has formed a cornerstone in all carbonatite discussions. It is probably true to say that the findings from Oldoinyo Lengai have dominated our ideas about carbonatites, in spite of the fact that the alkali rich, natrocarbonatitic lavas of Oldoinyo Lengai are markedly different from other carbonatites.

British fantasy action thriller starring Robert Carlyle and Ving Rhames. Every seven years, a deadly tournament is held in which 30 of the world's most lethal assassins gather in a secret location and battle it out for a cash prize of ten million dollars. Returning champion Joshau Harlow (Rhames) has a very personal reason for attending this year's tournament: he has been informed that one of his fellow contestants was responsible for the death of his wife, and he wants revenge at any cost.

Gritty British thriller starring Michael Caine. Harry Brown (Caine) is a widowed ex-serviceman living a quiet, modest life on a London housing estate. When his only friend Leonard (David Bradley) is brutally murdered by a gang of thugs on the estate, Harry becomes intent on avenging his death, and resorts to his own brand of vigilante-style justice in an increasingly lawless neighbourhood that has become overrun with gangs, guns and drugs. However, his attempts to clean up the estate inevitably bring him into conflict with the police, led by investigating officer DCI Frampton (Emily Mortimer) and Sergeant Hickock (Charlie Creed-Miles).