| Ergonomics Society Annual Conference | Nottingham, UK | Apr 1 2008 to Apr 3 2008 | |
| British Psychological Society Annual Conference | Dublin | Apr 2 2008 to Apr 4 2008 | |
| Reproductive Endocrinology and Infertility | San Francisco | Apr 3 2008 to Apr 4 2008 | |
| Biodiversity Informatics and Climate Change Impacts on Life | Aarhus, Denmark | Apr 5 2008 to Apr 6 2008 | |
| American Water Works Association's 2008 Water Security Congress | Cincinnati | Apr 6 2008 to Apr 8 2008 | |
| The Water Environment Federation (WEF) and the Air & Waste Management Association (A&WMA) Odors and Air Emissions 2008 | Phoenix | Apr 6 2008 to Apr 8 2008 | |
| Fire Department Instructors Conference 2008 | Indianapolis | Apr 7 2008 to Apr 12 2008 | |
| Royal College of Nursing's International Nursing Research Conference | Liverpool | Apr 8 2008 to Apr 11 2008 | |
| American Association for Cancer Research Annual Meeting 2008 | San Diego | Apr 12 2008 to Apr 16 2008 | |
| American Occupational Health Conference (AOHC® 2008) | New York | Apr 13 2008 to Apr 16 2008 | |
| Society of Petroleum Engineers: International Conference on Health, Safety and Environment | Nice, France | Apr 15 2008 to Apr 17 2008 | |
| WaterTech 2008 | Lake Louise | Apr 16 2008 to Apr 18 2008 | |
| The 2008 Canadian Environmental Conference and Tradeshow (CANECT 2008) | Toronto | Apr 21 2008 to Apr 22 2008 | |
| Industrial Accident Prevention Association's Health & Safety Canada 2008 | Toronto | Apr 21 2008 to Apr 23 2008 | |
| Provincial Infection Control Network: PICNet 2008 Educational Conference | Richmond | Apr 24 2008 to Apr 25 2008 | |
| EcoCity 2008 World Summit | San Francisco | Apr 24 2008 to Apr 26 2008 | |
| American Association of Occupational Health Nurses Symposium & Expo | Salt Lake City | Apr 25 2008 to May 1 2008 | |
| Harvard School of Public Health's Management Skills for Emerging Leaders in Environmental Health and Safety | Boston | Apr 28 2008 to Apr 30 2008 | |
| Wisconsin Council of Safety's 66th Annual Safety & Health Congress/Expo | Wisconsin Dells, Wisconsin | Apr 28 2008 to Apr 30 2008 | |
| Nevada Environmental Health Association Annual Conference | Las Vegas | Apr 29 2008 to May 1 2008 | |
| Sixth Annual International Greening Rooftops for Sustainable Communities Conference, Awards & Trade Show | Baltimore | Apr 30 2008 to May 2 2008 | |
| 2008 National Air Quality Conference | Portland | Apr 6 2008 to Apr 9 2008 | |
| Alberta's Environment Conference 2008 | Edmonton | Apr 21 2008 to Apr 23 2008 | |
| Looking Upstream: Chemical Contaminants, the Threat to Breastmilk and Connections to Breast Cancer Risk | Seattle | Apr 30 2008 | |
| Air & Waste Management Association and the Canadian Water Resources Association's: Changing Climate, Uncertain Futures, and Evolving Practices | Vancouver | Apr 21 2008 to Apr 23 2008 | |
| Annual Canadian Water Resources Association (CWRA) -Alberta Branch Conference: Watershed Management in Alberta – Making it Work | Calgary | Apr 6 2008 to Apr 8 2008 | |
| Alberta's Environment Conference 2008 | Edmonton | Apr 21 2008 to Apr 23 2008 | |
| Air & Waste Management Association and the Canadian Water Resources Association's: Changing Climate, Uncertain Futures, and Evolving Practices | Vancouver | Apr 21 2008 to Apr 23 2008 | |
| Looking Upstream: Chemical Contaminants, the Threat to Breastmilk and Connections to Breast Cancer Risk | Seattle | Apr 30 2008 | |
| Third Regional Conference on Occupational Health | Petaling Jaya, Malaysia | Apr 3 2008 to Apr 5 2008 | Jan 31 2008 |
| 5 Nations Health Protection Conference | Cork, Ireland | Apr 29 2008 to Apr 30 2008 | Feb 8 2008 |
| Facilitating Knowledge Exchange & Transfer For a Dynamic Future - 13th Annual National Health Outcomes Conference | Canberra | Apr 30 2008 to May 1 2008 | Mar 5 2008 |
| 2009 Ground Water Summit: The Science and Engineering Conference | Tucson, Arizona | Apr 19 2008 to Apr 23 2008 | Oct 3 2008 |
