1. Canada and the State of the Planet
   The Social, Economic and Environmental Trends That Are Shaping Our Lives
   Resource Type: Book
   Published: 1997
   
2. Evolution
   Sources Select Resources Encyclopedia
   Resource Type: Article
   In biology, evolution is change in the genetic material of a population of organisms through successive generations. Although the changes produced in a single generation are normally small, the accumulation of these differences over time can cause substantial changes in a population, a process that can result in the emergence of new species. Similarities among species suggest that all known species descended from a common ancestor (or ancestral gene pool) through this process of gradual divergence.
3. How to Save the World
   Strategy for World Conservation
   Resource Type: Book
   Published: 1980
   "How To Save The World" discusses, "Why the world needs saving now and how it can be done". Allen breaks his work down into seven chapters, devoting each to an important aspect of the global predicament. Securing the food supply, saving forests, preserving wildlife and presenting a strategy for conservation are all discussed as methods to improve the relationship between mankind and nature.
4. Speciation
   Sources Select Resources Encyclopedia
   Resource Type: Article
   Speciation is the evolutionary process by which new biological species arise.

Experts on Species in the Sources Directory

1. International Union for the Conservation of Nature and Natural Resources
2. Natural History Museum
3. Smithsonian Institution National Museum of Natural History