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Search for Past Life on Mars: Possible Relic Biogenic Activity in Martian Meteorite ALH84001

Thu, 08/01/1996 - 01:00 -- Hal Harris

How can little green men from Mars not be a "Pick of the Month"? This article has received a huge amount of notice in the popular press, and you've almost certainly heard about it by now. If you click on the highlighted word "Science" above, and you have a personal or institutional subscription to Science, you can read the complete text of the paper for yourself, online.

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Mon, 07/01/1996 - 01:00 -- Hal Harris

This book is a nearly ideal choice for summer reading. It is small and short, it tells the fascinating, true story of John Harrison, who may have contributed more than any other individual to the establishment of the British Empire. Working alone, the self-taught Mr.

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The Myth of Scientific Literacy

Sat, 06/01/1996 - 01:00 -- Hal Harris

If you are among the many high school and college chemistry teachers who have adopted the American Chemical Society's curricula, Chemistry in Context for college students or Chemistry in the Community (ChemCom) in secondary school, you will find that Morris Shamos will challenge the very basis of what you are trying to do, as well as the whole idea of "scientific literacy".

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Digital Diffraction

Mon, 04/01/1996 - 00:00 -- Hal Harris

I've always thought that optical transforms were a great model for the determination of crystal structures using X-ray diffraction, and I've used the ICE (Institute for Chemical Education) kit for this exercise many times.

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James Dewar, His Flask and Other Achievements

Fri, 03/01/1996 - 00:00 -- Hal Harris

The Dewar flasks that we use for storage of cryogenic fluids such as liquid nitrogen, oxygen, and helium, and which known outside the laboratory as "thermos bottles" were invented by James Dewar, who was the first person to liquefy hydrogen, and was nearly first in the nineteenth century races to liquefy all of the other gases.

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The National Science Education Standards

Thu, 02/01/1996 - 00:00 -- Hal Harris

Well, the final version of the National Science Education Standards has finally arrived. If you are involved in curriculum planning for your school or district, or if you want to study the document in detail, you can buy a copy for $19.95 + 4.00 shipping from the National Academy Press, 2101 Constitution Avenue, NW, Lockbox 285, Washington DC 20055 [1-800-624-6242].