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Discusses the problem of acidification of papers used in printing books. Source of the acid; History of papermaking; Details of deacidification techniques with the use of diethyl zinc. INSET: Limiting acidification at home.

The article reports on an ultrathin material, resembling paper, that is made of cellulose and carbon nanotubes and can be used as a powerful energy source. The material can be physically altered in shape without taking any damage to its overall function. Scientists believe that this could alter the way in which energy is used to power objects.

The article discusses a report published online in the December 7, 2009 issue of the "Proceedings of the National Academy of Sciences," regarding the construction by scientists of batteries and supercapacitors using office paper and some carbon and silver nanomaterials. Topics include the importance of power storage in solving energy problems, the properties that make paper a tangible material, and brief details on how researcher built the batteries.

The article recounts the restoration made to a recording by Woody Guthrie. Shortly after September 11, 2001, a package wrapped in brown paper arrived in the mail at the Woody Guthrie Archives in New York City. Guthrie's daughter Nora eventually figured out that the package was an analog bootleg recording of her father singing a live performance in 1949. She and a team of engineers transferred it into digital format. The Woody Guthrie recording won the Grammy for Best Historical Album in 2008.

The article explains how to create a möbius band, a two-dimensional surface with the puzzling property of having only one side. Despite its mind-bending characteristic, möbius band is an easy object to make. Just take a long strip of paper, give one end a half-twist, and tape the two ends together. Because of the half-twist, the front side of one end of the strip joins with the reverse side of the other end, so that the taped-together band has only one side.

The article talks about trisecting an angle by using origami. Origami artists create lines by folding paper instead of using a straightedge. Humiaki Huzita of the University of Padua in Italy, have explored the range of figures one can create with origami folds. Hisashi Abe of Hokkaido University in Japan discovered how to use the non-Euclidean technique to generate lines that trisect any angle. It also presents the steps in trisecting an angle.

The article looks at the technological applications of haptics. A scientific team led by mechanical engineer Allison Okamura developed sensors that measure how much pressure a robot is applying to the body. Using the same idea, Robert Webster, a graduate student in mechanical engineering at Johns Hopkins University in Baltimore, Maryland, has developed a tool that challenges users to move a virtual piece of paper across a computer screen.

Provides information on the use of cellulose by researchers at the University of Texas in Austin, as the main ingredient for making electronic paper. Typical strategy for making e-paper; Goal of the researchers for using cellulose; Paper-making process through the use of cellulose.

Provides information on the method formulated by mathematician Britney Gallivan on paper folding. Mathematical problem Gallivan had to solve in high school in order to get extra credits; Equation on how to fold a paper twelve times; Demonstration conducted by Gallivan for her equation.

Presents information on studies on the physical phenomenon of wrinkles in crumpled sheets of paper. Research on what happens at a single ridge between two sharp points; Effect of the sheet size on the total amount of energy required to crumple it; Experiment on the collective behavior of a large number of creases; Power-law relationships discovered in the properties of a crumpled ball.

Reports on efforts to create electronic paper. How the paper would combine the data-handling power of electronics with the flexibility and convenience of paper; Lucent and E Ink Corp's development of E-paper using an inexpensive printing technique; Use of a technique called microcontact printing to create arrays of transistors that control the E-papers pixels.

Focuses on the invention of a paper coating that allows inkjet printer ink to dry quickly. Description of the coating and its component parts; Differences between the coating invented by Bulent E. Yoldas and those used by Hewlett-Packard; Problems with the new coating; How fast fading of sharp printed images is a big problem for quick-dry printer paper.

Reveals that a new technology promises not only to reduce toxic dioxin residues in wood pulp and its wastes by more than 90 percent, but also cuts costs and bleaching time. Process description.

Reports on the similarities of snowflakes. Uniqueness of snow crystals on paper; Structures of the crystals; Speculation of the extraordinariness of snowflakes.

Reports that materials scientists have created a new form of calcium carbonate to help whiten paper. Work of June D. Passaretti of Pfizer, Inc., in Bethlehem, Pa.; What paper companies typically use; Spring meeting of the Materials Research Society; More.

Focuses on a report by biologists G.G. Meynell and R.J. Newsam which states that microscopy implicates fungal growth in foxed papers in an unfavorable environment, published in the August 3, 2002 issue of 'Nature.' Germination of fungal spores and mycelial development on damp papers.