Analyses of time-resolved sequences of molecular-resolution images allow the characterization and quantification of site-specific interactions and dynamics of adsorbed species. We have used scanning tunneling microscopy to probe and to quantify the weak substrate-mediated interactions in benzene overlayers on Au{111} at 4 K. We observed that benzene molecules exhibit three types of motion; two-dimensional (2D) desorption, 2D adsorption, and simultaneous cooperative shifts (2.4 ± 0.6 Å) of many molecules in molecular cascades

Serbian president Boris Tadic has said it is his country's "obligation" to catch war crimes suspects wanted by The Hague. Mr Tadic said Serbia's international obligation was not over just because it had handed over Radovan Karadzic.

Normal life was hit across Punjab on Wednesday, as activists of several Sikh organizations stopped trains and buses in response to a shutdown call given by Harnam Singh Dhuma, the chief of the Damdami Taksal (Bhindranwala) against the killing of a Sikh in Dabwali in Sirsa District on July 18, allegedly by the followers of the controversial Dera Sacha Sauda.

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