United Nations Framework Convention on Climate Change
http://unfccc.int/2860.php

Kyoto Protoco
http://unfccc.int/kyoto_protocol/items/2830.php

Kyoto Mechanisms
http://unfccc.int/kyoto_protocol/mechanisms/items/1673.php

Emissions Trading
http://unfccc.int/kyoto_protocol/mechanisms/emissions_trading/items/2731.php

Emission Trading System
http://ec.europa.eu/environment/climat/emission/index_en.htm

Clean Development Mechanism
http://cdm.unfccc.int/index.html

Joint Implementation
http://ji.unfccc.int/index.html

GHG (greenhousegas) Data
http://unfccc.int/ghg_data/items/3800.php

Environmental Protection Agency (EPA)
http://www.epa.gov/

Clean Air Act
http://www.epa.gov/air/caa/

Clean Air Interstate Rule
http://www.epa.gov/CAIR/

Clean Air Mercury Rule
http://www.epa.gov/oar/mercuryrule/index.htm

National Pollutant Release Inventory (NPRI)
http://www.ec.gc.ca/inrp-npri/

European Commission: Industrial Emissions
http://ec.europa.eu/environment/air/pollutants/stationary/index.htm

The European Pollutant Emission Register (EPER) and the European Pollutant Release and Transfer Register (E-PRTR)
http://ec.europa.eu/environment/air/pollutants/stationary/eper/index.htm

+ Link to EPR Data
http://eper.ec.europa.eu/eper/default.asp

IPPC Directive
http://ec.europa.eu/environment/air/pollutants/stationary/ippc/summary.htm

LCP Directive
http://ec.europa.eu/environment/air/pollutants/stationary/lcp.htm

The Waste Incineration Directive
http://ec.europa.eu/environment/air/pollutants/stationary/wid.htm

The VOC Solvents Emissions Directive
http://ec.europa.eu/environment/air/pollutants/stationary/solvents.htm

EU Targets on CO₂
http://ec.europa.eu/environment/climat/campaign/actions/euinitiatives_en.htm

EU National Biomass Action Plans
http://ec.europa.eu/energy/renewables/bioenergy/national_biomass_action_plans_en.htm

Carbon Capture and Geological Storage (European Commission sites)
http://ec.europa.eu/environment/climat/ccs/index_en.htm

Economic Commission for Latin America and the Caribbean
http://www.eclac.org/default.asp?idioma=IN

Argentina - Environmental Ministry Page has Information
http://www.ambiente.gov.ar/

Brazil - Environmental Ministry Page has Information
http://www.mma.gov.br/sitio/

Also for information specific to Sao Paulo State (biggest industrial state in Brazil)
http://www.cetesb.sp.gov.br/

Caribbean and Central America areas do not have specific regulations. They tend to follow EPA recommendations / regulations
Colombia - Environmental Ministry Page has Information
http://www.minambiente.gov.co/portal/default.aspx

Chile - Environmental Ministry Page has Information
http://www.conama.cl/portal/1301/channel.html

Mexico - Environmental Minstry Page has Information
http://www.semarnat.gob.mx/Pages/inicio.aspx

China - Ministry of Environmental Protection
http://www.zhb.gov.cn/law/index.htm

Australia
http://www.ephc.gov.au/taxonomy/term/23

New Zealand
http://www.mfe.govt.nz/laws/environment.html

Singapore
http://app.mewr.gov.sg/web/Contents/Contents.aspx?ContId=27

Malaysia
http://www.nre.gov.my/EN/Pages/home.aspx

Korean Environment Laws and Regulations
http://eng.me.go.kr/docs/laws/laws.html?topmenu=D&cat=400

Thailand Pollution Control Department
http://search.msn.com/results.aspx?srch=105&FORM=AS5&q=www.pcd.go.th