The National Trails System is in its hiking prime, celebrating its 40th birthday on Oct. 2, 2008. The network of 26 trails traverses about 60,000 miles throughout the country.
"Smart grids" are packages of technologies and services that allow two-way communication between homes and utilities, as well as between various parts of regional power distribution systems.
Links
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[2] https://www.sej.org/category/sej-publication/tipsheet
[3] https://www.sej.org/category/topics-beat/food
[4] https://www.sej.org/category/topics-beat/pollution
[5] https://www.sej.org/category/topics-beat/water
[6] https://www.sej.org/category/topics-beat/journalism/media
[7] https://www.sej.org/category/region/national
[8] https://www.sej.org/taxonomy/term/81
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[10] https://www.sej.org/category/topics-beat/cities-towns
[11] https://www.sej.org/category/topics-beat/other/all/no-category
[12] https://www.sej.org/publications/tipsheet/feds-set-stage-geothermal-development
[13] https://www.sej.org/category/topics-beat/energy
[14] https://www.sej.org/category/region/national/northwest
[15] https://www.sej.org/category/region/national/mountain-west
[16] https://www.sej.org/publications/tipsheet/congress-may-approve-major-lands-bill-november
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[20] https://www.sej.org/category/region/international
[21] https://www.sej.org/publications/tipsheet/can-smart-grids-really-help
[22] https://www.sej.org/publications/tipsheet/supreme-court-case-could-affect-nearly-550-power-plants
[23] https://www.sej.org/publications/tipsheet/post-election-agendas-begin-spawn-swim-upstream
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[26] https://www.sej.org/category/topics-beat/nuclear-power/radiation
[27] https://www.sej.org/category/sej-publication/tipsheet?page=77
[28] https://www.sej.org/category/sej-publication/tipsheet?page=74
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