"EarthTrends is a comprehensive online database, maintained by the World Resources Institute, that focuses on the environmental, social, and economic trends that shape our world."

There are country reports and detailed, time series data tables for most countries in each of the following areas:
Coastal and Marine Ecosystems, Water Resources and Freshwater Ecosystems, Climate and Atmosphere, Population, Health and Human Well-being, Economics, Business and the Environment, Energy and Resources, Biodiversity and Protected Areas, Agriculture and Food, Forests, Grasslands and Drylands, Environmental Governance and Institutions.

 

You may be asked to  register to view content, but the registration process is easy and the content is free.

Information resources and services in toxicology, environmental health, chemistry, HIV/AIDS, and specialized topics in minority health.

• Environment & Health Toxicology - Databases and other resources related to toxicology and environmental health. Includes TOXNET
  
• Chemical Information - Databases and other resources to search for information by chemical name or structure. Includes ChemIDplus: Lite and Advanced
• HIV/AIDS - Links to journal literature, clinical trials, treatment information, meeting abstracts, and other resources.
• Outreach Activities & Resources - Programs, resources and web sites for health issues of minority and other specific populations.
• Directory of Health Organizations - Search DIRLINE and Health Hotlines to locate health organizations and health hotlines.
  

Meta-Search and clustering engine for Environmental Health and Toxicology. Searches for information in databases from the NLM database system, NIH, and various U.S. government and international agencies.

Federal agency charged with protecting human health and the environment.  Topics range from human health and pesticides to toxic chemicals and water.  Easy search methods are: Quick Finder, which has links to terms and keywords that are frequently searched on the EPA web site, and Browse EPA Topics which has topics organized into broad categories.

"This database is a compilation of curated peer-reviewed research articles "that explore the use of wildlife, domestic, and companion animals as 'sentinels' for the effects of chemical, biological, and physical hazards in the environment that may be a risk to human health." Includes information about animal species, exposures, health effects, and location. From the Yale Occupational and Environmental Medicine Program, Yale University School of Medicine." (via LII)