Tunza is a UNEP magazine for and by young people. This issue is devoted to water usage.

The booklet argues that in spite of the recent surge in renewable electricity markets, the United States will need to dramatically increase the amount of installed renewable energy in order to improve energy security, create new jobs, and address the growing risks of climate change.

Interview with Edna Gardner Whyte, a competitive pilot and flight instructor from Garden City, Minnesota. Whyte discusses her family history, her childhood and education, moving to Oregon, her initial interests in flying, her training in nursing, taking up flying, winning her first race, teaching others to fly, becoming a flight instructor full-time, Prohibition bootlegging, races, a crash, Amelia Earhart, the growth of women in aviation, service as a Army Air Corps nurse during World War Two, being a flying salesman, flying helicopters, and building the Aero Valley Flying School.

Interviews with Ben Ivey Jr., Olgie (Mrs. Ben) Ivey Sr., and Mary Louise Ivey Bardas, from Denton, Texas. The interviewees discuss Ben Ivey Sr's business ventures in Denton, including their family history, each's upbringing and education, the history and operations of businesses owned by the family, life in Denton, neighbors, and local government.

Light spectra distributions were measured in two different montane forests: temperate and tropical. Spectral light measurements were made in different sized canopy gaps in the conifer forest at H. J. Andrews Experimental Forest in Oregon, USA. Researchers at Oregon State University created these gaps of 20 m, 30 m, and 50 m in diameter. In the tropical cloud forest, spectral light measurements were made in two plots that were permanently established at La Mucuy Parque Nacional in Venezuela, in collaboration with researchers at Universidad de Los Andes. In both studies, spectra and distributions of physiologically active light were analyzed: red, far-red, R/FR ratio, and blue light.

From Introduction: "This report covers the essential features of the asbestos industry, including occurrence, production, mining, milling, utilization, international trade, and marketing."

Report issued by the U.S. Bureau of Mines discussing the iron and steel scrap industry in the Pacific Northwest. As stated in the introduction, "this report surveys the supply and consumption of iron and steel scrap in the Pacific Northwest, with emphasis on Oregon and Washington" (p. 2). This report includes maps, tables, illustrations

From Introduction: "Material for this report was gathered during the last quarter of 1928 and the first quarter of 1929, when the author visited the quick-silver-producing districts of California, Nevada, Texas, Oregon, Washington and Arizona to view the progress made in recent years and gather material for a comprehensive study of the present-day quicksilver industry of the United States."

Report issued by the U.S. Bureau of Mines on energy consumption in the western United States. A focus on coal as the primary energy source is presented. This report includes tables, graphs, maps, and illustrations.

This bulletin discusses the classes and varieties of hard red winter wheats and the areas in which they are successfully grown. Among the varieties discussed are Turkey, Kharkof, Kanred, Blackhull, Minturki, and Baeska.

Script from the WBAP-TV/NBC station in Fort Worth, Texas, relating a news story.

From Introduction: "A review is given of the nomenclature, sources, imports, statistics, common methods of preparation, and testing of mineral pigments. A description of the Deer Park-Spokane colored-clay district and the laboratory methods of preparation of these colored clays, ochers, and siennas follows. The following report is merely preliminary in nature, only three months during the summer of 1927 being devoted to the laboratory investigation."

Report issued by the U.S. Bureau of Mines discussing the lode mines in the Bohemia Mining District of Oregon. The geological properties and mining activities are presented. This report includes tables, maps, and illustrations.

Describes types of erosion and methods for preventing the erosion of soil by water and wind.

Technical paper issued by the Bureau of Mines over the black sands of Oregon and California. The history, and character of the deposits are presented. This paper includes tables, maps, photographs, and illustrations.

Report discussing the cultivation of plums and prunes in California, Oregon, Washington, and Idaho. Discussions includes geographic distribution, different varieties, propagation, fertilizers, harvesting, and common diseases and insect enemies.

From abstract: This report presents the results of a rather complete reconnaissance of the Baker quadrangle, Oregon, carried out during brief studies of some mining districts in and near the area.

From introduction: This study was made in cooperation with the planning departments of Wasco and Hood River Counties, The purposes of this report are (1) to describe the occurrence, movement, availability, and quality of ground water in the basin; and (2) to assess, where possible, the extent, thickness, hydrologic boundaries, and hydraulic properties of the principal aquifers.

Technical paper issued by the Bureau of Mines over analyses of coals from many western states. The characteristics of the coals found in each state are discussed in detail. This paper includes tables, and maps.

Bulletin issued by the U. S. Department of Agriculture compiling selected articles from the Agricultural Experiment Stations. This bulletin contains articles on: Inoculation and Lime for Alfalfa, Citrus Culture in Southern Texas, Pruning Rotundifolia Grapes, Native Hays or Arid Region, Bermuda Grass, Short v. Long Feeding of Beef Cattle, Contagious Abortion of Cattle, Preventing Losses at Lambing time, Winter Lambs for the Pacific Coast Market, Feeding Work Horses, Colony Houses for Poultry, Food of the Crow Blackbird, and Flour for Baking Powder Biscuits.

Report issued by the U.S. Bureau of Mines discussing materials surveys conducted on mercury. As stated in the foreword, "the surveys dealing with metals and minerals summarize the demand-supply position in the United States and include information on production, imports, consumption, exports, substitutes, and pertinent history" (p. v). This report includes maps, tables, illustrations, and photographs.

This is an assessment report based on the population of marine mammals along the Pacific coastline in the year 2012. It is a working document that will continue to be updated as data changes.

Revised edition. "This bulletin applies to that part of the United States in which ordinary farm crops are grown largely under irrigation. It describes methods practiced in the more important commercial strawberry-growing districts in the irrigated regions of the West; it aims to aid those familiar only with local and perhaps unsatisfactory methods, as well as inexperienced prospective growers. The fundamental principles of the irrigation of strawberries are substantially the same as those which apply in the growing of other crops. Details of operation must necessarily be governed largely by the character of the crop grown. Since strawberries in the humid regions frequently suffer from drought, which causes heavy losses in the developing fruit, the information may prove suggestive to many growers in those localities who could install an irrigation system at small expense. Detailed information is also given as to soils and their preparation, different training systems, propagation, planting, culture, the leading varieties, harvesting, and shipping. Methods of using surplus strawberries for preserves and jams, for canning, and for flavoring for various purposes are given." -- p. 3

"This bulletin applies to that part of the United States in which ordinary farm crops are grown largely under irrigation. It describes methods practiced in the more important commercial strawberry-growing districts in the irrigated regions of the West; it aims to aid those familiar only with local and perhaps unsatisfactory methods, as well as inexperienced prospective growers. The fundamental principles of the irrigation of strawberries are substantially the same as those which apply in the growing of other crops. Details of operation must necessarily be governed largely by the character of the crop grown. Since strawberries in the humid regions frequently suffer from drought, which causes heavy losses in the developing fruit, the information may prove suggestive to many growers in those localities who could install an irrigation system at small expense. Detailed information is also given as to soils and their preparation, different training systems, propagation, planting, culture, the leading varieties, harvesting, and shipping. Methods of using surplus strawberries for preserves and jams, for canning, and for flavoring for various purposes are given." -- p. 3