| Code_to_Compute_Heights_on_Elliptic_Curves Magma implementation of Silverman's algorithm to compute the canonical height on an elliptic curve over a number field or function field, by Martine Girard. |
| EIS Software for computing Fourier coefficients of Eisenstein series attached to lattices by M. Kuss and J. Bruinier. Binaries for x86-Linux. |
| Ellipsa Includes Primo, an implementation of ECPP, and CPG, class polynomial builder. |
| Heegner_Tools Peter Green's Heegner Points package. Requires Linux and Pari/GP 2.1.1 or higher. |
| Modular_Forms_Software HECKE can be used to compute basis of q-expansions and Hecke operators on fairly general spaces of modular forms. |
| Modular_Quaternion_Groups Fundamental domains for Shimura curves, written in GAP. Documented with description of algorithms used and program structure, input and output. Results for quaternion algebras with discriminant up t |
| MWRANK Mordell-Weil rank of elliptic curves over the rationals, by John Cremona. |
| Periods_of_Hilbert_Modular_Forms A package of PARI programs (v.2.1.1 or higher) for calculations described in "Periods of Hilbert modular forms and rational points on elliptic curves" by H. Darmon and A. Logan. |
| TECC Tiny Elliptic Curve Calculator, by Masanari Kida. Requires KASH 2.2. |
| AB_Hydroconsult Consulting company in the areas of hydrology and environmental impact assessment describes its capabilities and services. Includes reports and photos of past projects worldwide. Offices in Uppsala and |
| Adolfson_Associates,_Inc_ Specializes in planning, natural resource management, environmental documentation and Endangered Species Act compliance in the Pacific Northwest. |
| ANL_Environmental_Assessment_Division Argonne National Laboratory, Argonne, IL, U.S.A. Develops assessments of the impacts of proposed actions on the environment and on human health and s |
| Australian_EIA_Network_Practitioners Directory of government environmental impact practitioners in Australia (Commonwealth, states, and territories). |
| C_E_N_Integrated_Environmental_Management_Unit_CC South Africa-based consultant in rural development and resource management programmes, including conducting environmental and social impact assessments of development ini |
| CIT_Ekologik_AB Consultants to industry offer expertise and services in life cycle assessment, cost-benefit analysis, environmental performance evaluation and support. Associated with Chalmers University of Technolog |
| David_Balloch_&_Associates_Pty__Ltd_ Melbourne, Australia, consultants providing environmental impact assessment and related services for the mining, forestry, oil and gas and pulp and paper industries. Experience primarily in Australia, |
| The_Ecobilan_Group Life Cycle Assessment (LCA) and strategic environmental management consultancy. Six locations in Europe, Asia, and North America. |
| Endangered_Species_Act_Consulting_Services,_LLC_ Mississippi firm offers surveys for federally listed species, section 7(c) biological assessments arising from federal actions such as wetland permits, and related services. |
| Environmental_Gain_Ltd Specialist UK based company working worldwide providing environmental impact assessment and ecology consultancy to developers and government. |
| Enviro-Support,_Inc_ Offers impact assessment and other multidisciplinary environmental services emphasizing ecology and integrative assessment. Colorado, U.S. |
| LAB_Coastal_Ecological_Consultants Consultants in coastal ecology and salt marshes, research with integrated land management, and environmental impact analyses for civil engineering projects. St. Ives, England. |
| 2_-0_LCA_Consultants Multinational, multidisciplinary group offers design and implementation of life cycle assessment of products. Site includes online publications and topical papers on LCA. |
| Nature_and_Business_Alliance Strategists and scientists who conduct environmental impact assessments and risk analyses throughout the Republic of South Africa and Southern Africa. Information on capabilities and experience. |
| PRe_Consultants__Life_Cycle_Impact_Assessment_methodology Netherlands-based consultancy specialized in the development of impact assessment methods for LCA. Site describes and documents the Eco-indicator 99 methodology. |
| PT__Intersys_Kelola_Maju Experts in environmental impact assessments in Indonesia, particularly for rural and urban development projects. Describes capabilities and provides examples of past projects. |
| Taschek_Environmental_Consulting New Mexico based firm specializing in environmental assessments and related resource studies. Describes projects and staff expertise in areas including air quality, archaeology, biology, noise, and so |
| Westland_Resource_Group Victoria, BC, firm offers professional services for environmental and socioeconomic impact assessment, utility project regulatory approvals, community and resource planning, and resource management. |
| Çinar_Engineering Offers environmental impact assessment (EIA) and other areas of environmental consultancy in Turkey. |
| Young_Associates_Environmental_Consultants Consulting terrestrial and aquatic ecologists offer environmental impact assessment, audit, policy, field surveys, construction impact control and expert witness services from offices in England, Scot |
| The_Baltic_Marine_Biologists An international non-governmental scientific organization whose aim is to promote studies on the biological diversity, structure, function and sustainable management of the ecosystems of the Baltic Se |
| Florida_Association_of_Benthologists_(FAB) Organization formed to share expertise and information on the use of aquatic community structures and processes (quantity and quality of the biota) to evaluate water quality conditions and ecosystem |
| The_North_American_Native_Fishes_Association Group's goal is to bring together professional and amateur aquarists, educators, students, anglers, fish and wildlife officials, and researchers in conservation efforts of the inhabitants of lakes an |
| Pacific_Streamkeepers_Federation A non-profit society helping streamkeepers take action through support, education, and building partnerships |
| South_Florida_Aquatic_Plant_Management_Society Non-profit organization with interests in aquatic weed and plant management, growth of aquatic plants, and restoration of wetlands. |
| Southern_California_Association_Marine_Invertebrate_Taxonomists Promotes the study of marine invertebrate taxonomy in southern California. Site has extensive information on marine biota, zoology, and taxonomy. |
| Algebraic_and_Geometric_Topology Fully refereed electronic journal. Free. Papers also deposited in the ArXiv. |
| Cahiers_de_Topologie_et_Geometrie_Differentielle_Categoriques Table of contents from vol.38 (1997). |
| Homology,_Homotopy_and_Applications Full text, free. |
| Journal_of_Knot_Theory_and_Its_Ramifications World Scientific. Connections between knot theory and other aspects of mathematics and natural science. Contents, abstracts from vol.9 (2000). Full text to institutional subscribers. |
| K-theory (Kluwer) Tables of contents from vol.11 (1997). |
by David Herring and RobertKannenberg 
Boreal Ecosystem Series· Introduction to BOREAS· The Mystery of the Missing Carbon· Should We Talk About the Weather?· Evolving in the Presence of FireComing Soon:· The Migrating BorealForestScientists estimate that between 1 and 2billion metric tons of carbon per year are "missing" from the globalcarbon budget. Or, more precisely, they cannot account for the location ofbetween 15 and 30 percent of the carbon released into the atmosphere each yearfrom fossil fuel burning (Sellers et al. 1997). Worldwide, humans annuallyrelease about 7 billion tons of carbon. Of that amount, 3 billion tons remaininthe atmosphere, 2 billion tons are absorbed into the ocean, and…the rest? Scientists assume land vegetation absorbs the rest, but they don’t knowexactly where or how much. 
The main motivation for studying Earth’s global carboncycle is to enablescientists to predict future levels of carbon dioxide in the atmosphere. According to Steven C. Wofsy, an environmental scientist at Harvard University,the ability to predict carbon dioxide levels is important if Earth scientistsareto answer fundamental questions like how much will global temperatures rise overtime, and how will this affect other aspects of Earth’s climate?"Are those 2 billion tons of carbon missing permanently, ortemporarily?" Wofsy asks. "You’re at a loss to predict if youdon’t know why the carbon is disappearing and if it will staygone." Ecologist Joe Berry checking instruments at the top of a tower in Saskatchewan, Canada. He is surrounded by120-year-old black spruce, one of the predominanttrees in the boreal forest. (Photograph courtesy BOREASproject)
In a concerted effort to solve the mystery of the missing carbon, NASA led aninterdisciplinary Boreal Ecosystem-Atmosphere Study (BOREAS) from 1994-97 thatspanned two Canadian provinces. Wofsy, along with members of 85 other scienceteams from five nations, participated in the investigation. Their prime suspectwas the boreal forest. Named after Boreas, Greek god of the north wind,boreal refers to the mostly evergreen forest that encircles the Earth athigh northern latitudes–between 43°N-65°N–occupying between16 to 20 million square kilometers of the Earth’s land surface. Could thiscold, mostly coniferous ecosystem be the culprit?
Some ImportantCluesThe data used in this study are available in one or more of NASA's Earth Science Data Centers.Thecircumpolar range of the boreal forest. From Hare and Ritchie (1972) (Map courtesy BOREASproject) 
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