| 2026-08-30 | Org. regulating air quality |
| 2026-08-28 | Org. that might do some spring cleaning? |
| 2026-05-13 | Fuel economy org. |
| 2026-04-04 | Waste watchdog, for short |
| 2025-12-23 | Org. regulating water safety |
| 2025-12-19 | Grp. with geologists and biologists |
| 2025-12-14 | Pollution-fighting org. |
| 2025-12-09 | Org. that oversees air quality initiatives |
| 2025-10-22 | Clean water org. |
| 2025-10-10 | A.Q.I. measurer |
| 2025-09-26 | Org. that measures A.Q.I. |
| 2025-09-08 | Pesticide regulator, in brief |
| 2025-07-06 | Org. concerned with ozone depletion |
| 2025-06-28 | Org. with toxicologists |
| 2025-05-27 | DDT banner |
| 2025-04-15 | Water-testing org. |
| 2025-03-01 | Green grp. |
| 2025-02-26 | Org. with the Acid Rain Program |
| 2025-02-06 | Air quality org. |
| 2025-02-04 | Org. that regulates "forever chemicals" |
| 2025-01-14 | Org. that helped phase out CFCs |
| 2024-11-01 | Nixon established it in 1970, for short |
| 2024-09-22 | Pollution-regulating org. |
| 2024-09-12 | Org. that tests the waters |
| 2024-07-23 | Clean air org. |
| 2024-06-18 | Emissions-monitoring org. |
| 2024-06-13 | Org. concerned with climate change |
| 2024-05-29 | Org. that enforces the Toxic Substances Control Act |
| 2024-04-17 | Lead regulator, for short |
| 2024-02-24 | Org. that regulates fertilizers |
| 2024-02-07 | Org. with an Office of Water |
| 2024-01-07 | Superfund grp. |
| 2024-01-02 | Green letters? |
| 2023-11-13 | Org. concerned with emissions |
| 2023-11-09 | Org. with grants for asbestos removal |
| 2023-09-25 | Org. that regulates hazardous waste |
| 2023-08-20 | Grp. that measures 1-Across |
| 2023-07-09 | Org. created the same year as Earth Day |
| 2023-06-06 | Org. established by Nixon |
| 2023-06-05 | Clean Air Act enforcer, for short |
| 2023-05-28 | Grp. regulating pesticides |
| 2023-04-27 | Greenhouse gas regulator, for short |
| 2023-03-27 | Org. with pollution solutions |
| 2023-03-19 | Org. established by 111-Down |
| 2023-02-20 | Government grp. employing ecologists |
| 2023-01-10 | Energy-monitoring org. |
| 2022-09-22 | Clean water org. |
| 2022-09-18 | Clean Air Act org. |
| 2022-09-13 | Clean air org. |
| 2022-07-27 | Clean Air Act org. |
| 2022-04-14 | Water monitoring grp. |
| 2022-03-05 | Org. created in the wake of "Silent Spring" |
| 2022-01-02 | Clean energy grp. |
| 2021-10-25 | Smog-monitoring org. |
| 2021-10-05 | Emissions control grp. |
| 2021-07-19 | Clean air and water org. |
| 2021-07-18 | Fuel economy authority, for short |
| 2021-07-09 | Org. with an Office of Air and Radiation |
| 2021-05-21 | Org. established partly in response to Rachel Carson's "Silent Spring" |
| 2021-05-12 | Org. that launched WaterSense in 2006 |
| 2021-04-25 | Org. with lots of money to waste? |
| 2021-04-06 | Org. since Nixon's presidency |
| 2021-03-07 | Org. that takes the lead on lead? |
| 2021-02-28 | Cleanup grp. |
| 2021-02-20 | Org. with resources on smart growth |
| 2021-02-17 | Antipollution org. |
| 2021-02-16 | Org. that monitors air quality |
| 2020-12-08 | Fuel economy org. |
| 2020-11-08 | Org. that awards the Safer Choice label |
| 2020-10-08 | Fuel economy authority, for short |
| 2020-09-07 | Safe Drinking Water Act enforcer, for short |
| 2020-07-14 | Org. concerned with sustainability |
| 2020-06-03 | Org. with monitors |
| 2020-05-31 | Water safety org. |
| 2020-05-23 | Water monitor, for short |
| 2020-04-25 | Org. that awards the Energy Star label |
| 2020-04-14 | Emissions watchdog, for short |
| 2020-04-06 | Org. that cleans up oil spills |
| 2020-04-04 | Org. with the Office of Land and Emergency Management |
| 2020-03-23 | Smog-monitoring org. |
| 2020-02-22 | UV index monitor |
| 2020-02-03 | Fuel economy authority, for short |
| 2020-01-29 | Org. seeking clean skies |
| 2019-11-14 | Fuel economy org. |
| 2019-10-08 | Air-quality org. |
| 2019-08-31 | Cleanup grp. |
| 2019-08-27 | Pollution watchdog, for short |
| 2019-07-17 | Green branch, for short |
| 2019-06-10 | Air quality watchdog created by the Nixon admin. |
| 2019-05-20 | Org. concerned with ecosystems |
| 2019-01-27 | Watchdog org. established by Nixon |
| 2018-12-27 | Fed. science org. |
| 2018-10-07 | Org. founded under Nixon |
| 2018-09-26 | Green-minded org. |
| 2018-08-06 | Clean Air Act org. |
| 2018-05-13 | Org. with a flower logo |
| 2018-04-29 | Green org. |
| 2018-04-27 | Ratings org. |
| 2018-03-22 | Org. established during Nixon's presidency |
| 2018-03-08 | Org. whose mission involves emissions |
| 2018-01-16 | Org. concerned with soil and water |
| 2017-12-04 | Clean Air Act org. |
| 2017-12-03 | Superfund org. |
| 2017-11-26 | Sample-collecting org. |
| 2017-10-07 | Org. concerned with 9-Down |
| 2017-07-08 | Plant-monitoring org. |
| 2017-05-26 | Org. that promotes Energy Star Day |
| 2017-04-12 | Org. concerned with ecology |
| 2017-04-03 | Pollution police, for short |
| 2017-03-24 | Wetlands regulator, for short |
| 2017-03-21 | Green govt. group |
| 2017-01-15 | Org. concerned with water quality |
| 2016-12-20 | Org. concerned with climate change |
| 2016-10-23 | Clean energy grp. |
| 2016-09-12 | Ecologically oriented org. |
| 2016-09-01 | Inits. on a car sticker |
| 2016-08-29 | Energy Star org. |
| 2016-08-16 | Superfund org. |
| 2016-07-17 | Cap-and-trade org. |
| 2016-07-03 | Green org. |
| 2016-07-01 | Org. that covers Springfield in a dome in "The Simpsons Movie" |
| 2016-06-29 | Fuel economy org. |
| 2016-05-12 | Enforcer of the Solid Waste Disposal Act, for short |
| 2016-04-10 | Org. established by President Nixon |
| 2016-04-05 | Radon regulators, in brief |
| 2016-04-03 | Clean air org. |
| 2016-02-17 | Grp. concerned with global warming |
| 2016-02-09 | U.S. asbestos regulator |
| 2016-01-03 | Green grp. |
| 2015-11-01 | Dump site monitor, for short |
| 2015-08-12 | Org. whose resources partly go to waste? |
| 2015-08-10 | Org. concerned with clean air |
| 2015-06-15 | Smog-fighting govt. group |
| 2015-06-14 | Org. that regulates arsenic and asbestos |
| 2015-05-13 | Org. with monitors |
| 2015-04-28 | Org. that might employ a climatologist |
| 2014-12-25 | Org. concerned with 34-Across |
| 2014-12-03 | Org. employing Walter Peck in "Ghostbusters" |
| 2014-10-11 | Org. with a radon hotline |
| 2014-09-04 | Evil org. in "The Simpsons Movie" |
| 2014-07-23 | Water-quality org. |
| 2014-07-21 | Org. tasked with enforcing the Clean Air Act |
| 2014-04-27 | Oil spill-monitoring org. |
| 2014-03-21 | Sustainable practices grp. |
| 2014-02-23 | Green monitor, for short? |
| 2014-01-26 | Fuel economy authority, for short |
| 2013-10-12 | Green org. |
| 2013-08-18 | Superfund org. |
| 2013-08-03 | Org. with an Office of Water |
| 2013-07-30 | Org. with air and water standards |
| 2013-02-27 | energystar.gov grp. |
| 2013-02-26 | Org. that monitors oil spills |
| 2013-02-10 | Org. that fines polluters |
| 2013-01-25 | Abbr. in auto ads |
| 2012-11-03 | Antagonistic org. in "The Simpsons Movie" |
| 2012-09-07 | Org. whose seal has a flower |
| 2012-08-24 | It's got its standards: Abbr. |
| 2012-07-30 | Eco-friendly org. |
| 2012-07-09 | Green org. |
| 2012-07-08 | Org. trying to clear the air? |
| 2012-06-21 | Federal org. issuing standards |
| 2012-05-28 | Clean air org. |
| 2012-04-28 | Org. with lead concerns |
| 2012-03-14 | Pollution watchdog org. |
| 2012-02-29 | Green org. |
| 2011-12-18 | Cleanup org. |
| 2011-11-17 | Cleanup org. |
| 2011-10-03 | Clean air org. |
| 2011-09-18 | UV index monitor, for short |
| 2011-08-18 | Green grp. |
| 2011-07-26 | Emissions watchdog, for short |
| 2011-05-29 | UV index monitor |
| 2011-03-27 | M.P.G. watcher |
| 2010-10-14 | Abbr. in many car ads |
| 2010-09-22 | Org. doing atmospheric tests |
| 2010-09-19 | Spill-fighting grp. |
| 2010-08-11 | DDT-banning org. |
| 2009-11-09 | Clean Air Act org. |
| 2009-10-04 | "Go Green!" newsletter org. |
| 2009-05-20 | Air monitor, for short |
| 2009-02-08 | Org. with an Office of Water |
| 2008-10-23 | DDT banner |
| 2008-10-21 | Air quality org. |
| 2008-08-30 | Abbr. in car ads |
| 2008-08-24 | Emissions org. |
| 2008-08-18 | Org. monitoring industrial wastes |
| 2008-07-28 | Dump cleanup grp. |
| 2008-07-09 | Waste watchers: Abbr. |
| 2008-06-25 | Abbr. in car ads |
| 2008-06-04 | Org. monitoring 38-Down quality |
| 2008-04-27 | Clean air org. |
| 2008-03-13 | Org. established by Nixon |
| 2008-01-29 | Fuel economy org. |
| 2008-01-22 | Air quality grp. |
| 2007-12-06 | Govt. org. with a flower in its logo |
| 2007-11-19 | Fed. air quality monitor |
| 2007-10-29 | Mileage rating org. |
| 2007-10-24 | Air quality org. |
| 2007-09-26 | Clean Air Act org. |
| 2007-09-07 | UV index monitor |
| 2007-06-14 | DDT banner |
| 2007-06-10 | energystar.gov grp. |
| 2007-06-07 | Waste watchers' org. |
| 2007-04-22 | Smog-watching grp. |
| 2007-03-30 | Org. established by Nixon |
| 2007-03-05 | Eco-friendly org. |
| 2007-02-28 | Air-testing org. |
| 2006-10-25 | Smog control grp. |
| 2006-09-01 | Grp. concerned with m.p.g. |
| 2006-07-04 | Air-testing org. |
| 2006-06-27 | Clean air org. |
| 2006-01-20 | Energy Star org. |
| 2005-12-18 | Govt. org. with a flower in its logo |
| 2005-11-25 | DDT banner |
| 2005-10-27 | Test-conducting org. |
| 2005-10-24 | Antipollution org. |
| 2005-08-21 | Grp. setting standards |
| 2005-06-05 | Superfund administrator: Abbr. |
| 2005-02-28 | Clean air org. |
| 2005-02-08 | Mileage rating grp. |
| 2005-02-04 | Water tester: Abbr. |
| 2005-01-11 | Emissions watchdog: Abbr. |
| 2004-12-16 | Org. that conducts many studies |
| 2004-12-15 | Ecol. watchdog |
| 2004-10-20 | Fed. watchdog |
| 2004-10-11 | Factory-emissions testing grp. |
| 2004-10-03 | Org. that does studies |
| 2004-09-14 | Clean air grp. |
| 2004-09-12 | Green grp. |
| 2004-08-22 | Org. concerned with PCB's |
| 2004-08-18 | Org. concerned with PCB's |
| 2004-03-28 | Grp. involved in a cleanup |
| 2004-03-01 | Ecol. watchdog |
| 2004-02-25 | Rater of m.p.g. |
| 2004-02-10 | Clean-air org. |
| 2003-12-28 | Superfund org. |
| 2003-11-25 | Air quality tester, for short |
| 2003-10-27 | Pollution control org. |
| 2003-10-24 | Trash trackers: Abbr. |
| 2003-09-30 | Pollution watchdog: Abbr. |
| 2003-07-11 | Org. launched by Nixon |
| 2003-06-28 | Superfund administrator: Abbr. |
| 2003-05-19 | Pesticide-monitoring grp. |
| 2003-04-20 | Org. with a superfund |
| 2003-04-14 | Air-quality monitoring org. |
| 2002-12-31 | It rates m.p.g. |
| 2002-11-27 | Cabinet-level dept. |
| 2002-11-14 | UV index tracker |
| 2002-09-30 | Fed. pollution monitor |
| 2002-09-04 | Clean Air Act enforcer: Abbr. |
| 2002-07-10 | Org. that may be involved in a cleanup |
| 2002-06-19 | Raters of m.p.g. |
| 2002-06-16 | Smog-fighting grp. |
| 2002-06-09 | Assessors of m.p.g. |
| 2002-05-06 | Clean air org. |
| 2002-04-04 | Emissions-regulating org. |
| 2002-02-24 | Waste watchers: Abbr. |
| 2002-01-23 | Pollution control grp. |
| 2001-11-18 | Air monitor: Abbr. |
| 2001-05-24 | Grp. monitoring emissions |
| 2001-04-20 | Eco-friendly feds |
| 2001-04-18 | Clean air grp. |
| 2001-03-08 | Org. that banned DDT |
| 2000-12-21 | Smog-regulating grp. |
| 2000-11-26 | Org. with an Office of Water |
| 2000-08-19 | UV index monitor |
| 2000-06-29 | Air tester: Abbr. |
| 2000-05-06 | Govt. agency since 1970 |
| 2000-02-23 | Mileage rating org. |
| 2000-02-13 | Standards issuer, briefly |
| 2000-02-09 | Antipollution org. |
| 1999-11-21 | Grp. with standards |
| 1999-08-21 | Kind of rating |
| 1999-07-18 | M.P.G. determiners |
| 1999-05-28 | Org. concerned with emissions |
| 1999-04-24 | Waste watchers: Abbr. |
| 1999-04-18 | Pollution control org. |
| 1999-04-07 | Emissions control grp. |
| 1999-02-06 | Kind of rating |
| 1999-01-12 | Mileage testing grp. |
| 1998-08-10 | Ecol. watchdog |
| 1998-07-29 | Govt. watchdog |
| 1998-06-16 | Pollution stds. setter |
| 1998-05-19 | Smog-battling org. |
| 1998-04-25 | Grp. that rates |
| 1998-03-17 | Ecol. watchdog |
| 1997-11-19 | Govt. watchdog |
| 1997-09-16 | Emissions tester: Abbr. |
| 1997-07-02 | Govt. watchdog group |
| 1997-06-12 | Air quality tester: Abbr. |
| 1997-03-09 | Org. founded in 1970 |
| 1997-02-04 | Grp. overseeing toxic cleanups |
| 1996-09-08 | Auto indus. regulator |
| 1996-08-26 | Clean air grp. |
| 1996-07-18 | Car m.p.g. raters |
| 1996-07-07 | Ecol. police |
| 1996-06-30 | Auto industry regulator: Abbr. |
| 1996-06-07 | Emissions watchdog: Abbr. |
| 1996-04-22 | Car m.p.g. raters |
| 1996-04-17 | Govt. watchdog grp. |
| 1996-03-21 | Polluter-busting org. |
| 1996-02-25 | Testing org. |
| 1996-02-07 | Pollution control grp. |
| 1996-01-16 | Fed. air quality org. |
| 1995-09-10 | Car-emissions agcy. |
| 1995-06-30 | Emissions watchdog: Abbr. |
| 1995-05-07 | Fuel efficiency rater: Abbr. |
| 1995-02-18 | Ratings org. |
| 1995-02-15 | Ecol. org. |
| 1994-11-09 | Auto-testing grp. |
| 1994-09-15 | Antipollution grp. |
| 1994-05-25 | Antipollution grp |
| 1994-04-23 | Agcy. that monitors smoking hazards |
| 1994-03-31 | Clean air org. |
| 1994-03-28 | Fuel efficiency rater: Abbr. |
| 1994-03-11 | Clean air agcy. |
| 1994-03-01 | Wetlands watchdog |
| 1994-01-13 | Abbr. in car ads |
| 1993-12-30 | Clean water agcy. |