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Sixty years have passed since Avery, MacLeod and McCarty published their landmark paper revealing DNA as the genetic material, writes Heather Dawes.

1 Dewey, Mitra, and the “Technological Proletariat:” Democratizing the Information Revolution John Hartmann, Southern Illinois University [email protected] Pragmatism and Technological Practice Conference Rochester Institute of Technology February 14, 2003 Do not cite w/o permission – comments are always welcome Introduction In his 1939 essay, “Creative Democracy – The Task Before Us,” John De...

The field of microengineering, which has evolved over the past few decades, is leading to radical changes in manufacturing techniques for high-technology products. Microengineered devices and systems are being applied to an increasing range of applications in the automotive, aerospace, telecommunications, and biomedical/pharmaceutical industries, and this trend is expected to continue well into...

In miniaturised objects fabricated by modern technology the smallest linear size may be of a few nanometers. In the field of microelectronics, the advantages of such a miniaturisation are huge (increased complexity and reliability, reduced costs). The technology is now approaching the limits where further size reduction will be impossible, except for very novel techniques such as molecular elec...

■ Abstract The transition from the Middle Paleolithic to the Upper Paleolithic is considered one of the major revolutions in the prehistory of humankind. Explanations of the observable archaeological phenomena in Eurasia, or the lack of such evidence in other regions, include biological arguments (the role of Cro-Magnons and the demise of the Neanderthals), as well as cultural-technological, an...

Despite the huge technological transformation of the global economy in the 20th Century, stabilization of greenhouse gas emissions will require a comparable revolutionary technological change in the 21st Century. While projections of future greenhouse gas (GHG) emissions show large increases in the coming century, the scenarios that underpin these projections already include major improvements ...