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The article presents facts and information about several issues. "Cleopatra's Needle" is being destroyed slowly by the atmosphere in London, Great Britain. Newspapers consume six hundred million pounds of paper annually, while seventy-two thousand dollars are spent by the government yearly for twine to tie up the mail packages.

This paper introduces the term "landscape meteorology" to cover a variety of beliefs associating significant atmospheric processes and results with culturally induced features of the landscape. These beliefs, which became prominent during the period of discovery, played an important role in early America and during the settlement period of the Plains. In the forested East, weather and climate modification centered largely on deforestation and reforestation. The concept ot the tree-rainfall syndrome was also transferred to the West, where it received much attention. New and largely indigenous Western concepts regarding landscape forms of weather and climate modification stressed plowing the hard sod, facilitating electrical expression by means, and storing water and (including irrigation) to humidify and cool the air. [ABSTRACT FROM AUTHOR]

A chamber to house two marmosets in a space-simulated environment was built and tested. The chamber was used in three experiments of two weeks duration each to study changes in the oral microflora of marmosets exposed to an atmosphere of 70% oxygen and 30% nitrogen at 5 psi. [ABSTRACT FROM AUTHOR]

Presents a reply to the comment of the article written by John E. Oliver entitled "A Genetic Approach to Climatic Classification," previously published in "Annals of the Association of American Geographers." Selection of poor examples in the quest for stations that do not fit the scheme suggested in the paper; Questionability on the usage of short-term and old data in any climatological analysis; Role played by air masses in maritime origin in the determination of the summer climate of some continental stations.

The major exobiological problem is the detection of life on other planets. The present paper presents experimental data on gas exchange between different samples of terrestrial soils and the atmosphere. The feasibility of applying the gas chromatographic technique to the detection of extraterrestrial life is discussed.

The current status of radiation protection in Canada has been summarized in the present paper, the first of a three-part series. Particular emphasis has been placed on the role of the Radiation Protection Division of the Department of National Health and Welfare. Somatic and hereditary effects of radiation exposure are briefly discussed as a basis for an understanding of the radiation protection standards which have been developed at national and international levels. The rapid increase in use of radioactive materials and x-ray apparatus in medicine, industry and research, and the extensive atmosphere testing of nuclear weapons have led to the development of comprehensive radiation protection activities in Canada, especially in the Department of National Health and Welfare. Well-established lines of communication and liaison exist among the various agencies responsible for these activities.

Atmospheres capable of producing organic compounds under primitive conditions are discussed in the light of recent experimental evidence. The atmosphere of Mars is discussed, in particular, the observations of Sinton of reflection spectra with features at 3.45, 3.58, and 3.69, which are attributes to C-H bands and the presence of organic molecules. Colthup interprets these features as being representative of organic aldehydes and suggests specifically, acetaldehyde. Many works have considered these observations as being indicative of life on Mars. Rea has offered alternative hypotheses. This paper presents experimental evidence of yet another possible explanation; that organic compounds are being produced in the Martian atmosphere, and may be responsible for Sinton's observations. The influence of such syntheses on possible Martian organisms is discussed. Various possible Martian atmospheres have been irradiated with ultraviolet light as well as other possible energy sources and a variety of organic end products have been identified. Martian atmospheres plus acetaldehyde as a starting point have also been used and end products analyzed. Possible abiogenic pathways for Mars are discussed.