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LIBRARY SciTech ALERT: A Semi-monthly Service for Undergraduates
no. 9 (5 March 2003)


1. Freedman, Wendy L. "On the age of the universe,"
   Daedalus v.132, no.1 (Winter 2003): p.122-126.

   In 1929, American astronomer Edwin Hubble discovered that the 
   universe was expanding. On the other hand, Einstein's equations in
   relativity implied that the universe must once have been much denser 
   and hotter. These results suggested that the universe began with a 
   "big bang". Recent observations reveal that the expansion of the
   universe is further accelerating. Astronomers hope to resolve the 
   deepest riddles of this mysterious force.

   Daedalus is available electronically via ProQuest at

2. Conway, Gordon & Toenniessen, Gary. "Science for African Food Security,"
   Science v.299, no.5610 (21 Feb. 2003): p.1187-1188.

   Low soil fertility and crop losses from pests and droughts have reduced
   harvests to below subsistence levels in most African farms. The "Doubly
   Green Revolution" is taking place in Africa to combat this problem. It 
   combines elements of ecological agriculture with new crop varieties
   designed to withstand adverse conditions. Farmers are now reaping the 
   benefits of sustainable agriculture.

   Science (Periodical Q1 .S35) is also available electronically at


Simply Einstein : relativity demystified / Richard Wolfson
(QC173.57 .W65 2003)

   In clear, understandable terms, the author explores the ideas at the 
   heart of relativity and shows how they lead to such absurdities as time 
   travel, curved space, black holes, and new meaning of past and future.

New books in the Library:  <>


1. Shuttle crew's last minutes shown - Nasa has aired footage showing some
   of the final moments from inside the Columbia space shuttle before it
   disintegrated while heading back to Earth.
   BBC News 28 February 2003

2. Stem Cell Surprise: Blood cells form liver, nerve cells - Human blood
   contains stem cells that can be transformed outside the body into a
   variety of cell types, suggesting that a person's blood could someday
   provide replacement cells for that individual's damaged brain or kidney.
   Science News Online 1 March 2003

More science news at
   Discovery News <>
   ScienceDaily <>

Previous issues of this service are available at

We welcome your feedback on this service.

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