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View Resource Single Electron Detection in Quadruple-GEM Detector with Pad Readout

This pre-print from the Stanford Linear Accelerator Center (SLAC) demonstrates the detection of single electrons in ethane at 1 bar through the use of four GEMs operating in tandem and coupled to pad readout. The paper, available for download in .pdf or .ps format, presents "measurements of single electron pulse height distributions, total gas gain measurement and calculation, pad-to-pad...

http://www.slac.stanford.edu/cgi-wrap/getdoc/slac-pub-8785.p...
View Resource Endangered Cats of North America

This newly online report (.pdf format) from the National Wildlife Federation takes a comprehensive look at wild cat species of the US and the major threats to their survival. The report indicates that "many of North America's cats are threatened or endangered; others have declining populations or face a more distant threat of local and regional elimination due to human development and other...

https://www.nwf.org/~/media/PDFs/Be%20Out%20There/National-W...
View Resource Green Chemistry Institute

This special feature page from the American Chemical Society (ACS) showcases the up-and-coming field of "green chemistry," that is, the development of chemical products and processes that eliminate or reduce the use and generation of hazardous substances. A list of principles behind green chemistry, a searchable bibliography of green chemistry references, green chemistry links (including...

https://www.acs.org/content/acs/en/greenchemistry.html
View Resource Vegetable MD Online

The Department of Plant Pathology at Cornell University provides this online guide to vegetable diseases. A compilation of vegetable disease fact sheets, the site is organized by crop and offers photographic images and a description of each vegetable crop in healthy and diseased states. The site also includes an Online Glossary of Technical Terms in Plant Pathology and links to additional...

http://vegetablemdonline.ppath.cornell.edu/
View Resource Shallow End For Amphibians

This news brief from Nature magazine summarizes a recent paper discussing the combined effects of climate change on declining amphibian populations. Summer climate (detrimental ultraviolet exposure) appears to be linked to spring disease (lethal fungal infections), placing the future of amphibian populations in jeopardy. Several other interactions may also influence survival, such as predator...

http://www.nature.com/news/1998/010404/full/news010404-13.ht...
View Resource US Patent Applications

The US Patent and Trademark Office has recently updated its patent database, adding access to the full text of all US patent applications since March 15, 2001. This is in addition to the full text of all patents issued since 1976. The site contains a database searchable by quick (two-term) or advanced Boolean protocol or by patent number. Containing applications from a wide range of technologies...

http://patft.uspto.gov/
View Resource ACM Crossroads Student Magazine

This is a free online version of ACM Crossroads, a student-run quarterly publication of the Association of Computing Machinery (ACM). Past themes have included wireless computing, intelligent agents, computer games, and law and ethics among others. Along with the regular journal content, ACM Crossroads posts links to resources for finding jobs and internships, a weekly What's New column, and...

https://xrds.acm.org/
View Resource Reconciling Observations of Global Temperature Change

The National Research Council's Panel on Reconciling Temperature Observations published this report in 2000. The National Academy Press Website offers free online viewing of this important publication, which evaluated the much-publicized discrepancy between surface and atmospheric temperatures in the global change records. The Panel found that "the warming trend in global-mean surface temperature...

https://www.nap.edu/catalog/9755/reconciling-observations-of...
View Resource Science Snacks Online

"Science Snacks" is an online compendium of science tidbits that pique the interest and satisfy the gee-whiz appetite. Whether seeking to understand Afterimage or Whirling Watcher, users will be drawn in by these brief and intriguing descriptions of scientific fact, with associated learning activities and Helpful Hints. Designed originally for local high school science teachers but used by...

https://www.exploratorium.edu/snacks/
View Resource Earth Observatory Data & Images: New Data

NASA's Earth Observatory Data & Images page provides periodic updates on data availability. The seventeen datasets listed here include the many types of scientific data collected within the time period 1979-2001, with recent data on 4km2Fires, Ozone, and UV Exposure. By clicking on a specific time period and data type, the user is directed to the appropriate data selection.

https://earthobservatory.nasa.gov/
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