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LIBRARY SciTech ALERT: A Semi-monthly Service for Undergraduates no. 9 (5 March 2003) MAGAZINE STORIES 1. Freedman, Wendy L. "On the age of the universe," Daedalus v.132, no.1 (Winter 2003): p.122-126. <http://library.ust.hk/cgi/db/pqd-article.pl?288009251> 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 <http://library.ust.hk/cgi/db/pqd-pubid.pl?25041> 2. Conway, Gordon & Toenniessen, Gary. "Science for African Food Security," Science v.299, no.5610 (21 Feb. 2003): p.1187-1188. <http://www.sciencemag.org/cgi/content/full/299/5610/1187> 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 <http://library.ust.hk/cgi/db/org.pl?sciencemag> FEATURED BOOK Simply Einstein : relativity demystified / Richard Wolfson (QC173.57 .W65 2003) <http://ustlib.ust.hk/record=b777718> 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: <http://library.ust.hk/res/newbooks/> SCIENCE NEWS ON THE INTERNET 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 <http://news.bbc.co.uk/1/hi/world/americas/2809645.stm> 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 <http://www.sciencenews.org/20030301/fob1.asp> More science news at Discovery News <http://dsc.discovery.com/news/news.html> ScienceDaily <http://www.sciencedaily.com/index.htm> Previous issues of this service are available at <http://library.ust.hk/scitech/> We welcome your feedback on this service. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - This mail was sent to you by the HKUST LIBRARY's SciTech ALERT list. List Archives are available at http://library.ust.hk/scitech/ - - - - - - - - - - - - - To get off the list, "unsubscribe" from "Library-SciTech-ALERT-list" at: https://lists.ust.hk/cgi-bin/itsc/mailinglist/restricted/subscribe.pl
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