Images Dated 31st May 2007

Regenerating nerve cell, TEM

Regenerating nerve cell. Coloured transmission electron micrograph (TEM) of a section through a nerve axon (blue) regenerating within a Schwann cell (light brown). The Schwann cell is within the basement membrane (pink) of an old Schwann cell. The Schwann cell's nucleus is green. An axon is a nerve fibre that passes information between nerve cells. The axon is surrounded by a myelin sheath (dark brown), a fatty insulating layer formed by the Schwann cells, which increases the speed at which nerve impulses are carried. Only cells of the peripheral nervous system, and not the central nervous system (CNS), are surrounded by Schwann cells and are able to regenerate after injury

© STEVE GSCHMEISSNER/SCIENCE PHOTO LIBRARY

A contaminated sea lion rests near an oil slick caused by the rupture of an undersea

A contaminated sea lion rests near an oil slick caused by the rupture of an undersea oil pipeline from Chile's state company ENAP on San Vicente bay near the city of Concepcion, some 510 kms (316 miles) south of Santiago May 31, 2007. The spill, which is estimated at over 2,000 barrels of oil, has seriously affected at least one community of sea lions and caused the deaths of different species of birds. REUTERS/Ivan Alvarado (CHILE) - GM1DVJPNANAA

CARTOON: ANARCHISTS, 1885. Gothams Gospel Needs: Why send our missionaries to

CARTOON: ANARCHISTS, 1885.
Gotham's Gospel Needs: Why send our missionaries to Africa's sunny fountains? Let them stay here and labor among the Barbarous tribes of the metropolis. An American magazine cartoon of 1885 on the prevalence of anarchists in New York City. Johann Most is pictured in the center foreground

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