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Thank you for visiting the Division on Earth & Life Studies of the National Academies of Sciences, Engineering, and Medicine. Since our website changed its URL structure in 2010, some old links to popular content have been producing 404 file not found errors. Some of the most popular pieces of content our visitors have been looking for when they received this error have correct links listed here. If the content you are seeking is not listed below, feel free to contact the web content manager at dels@nas.edu

• Understanding Stem Cells Booklet
• Find more from our work on stem cells here
• Your Dog's Nutritional Needs: A Science-based Guide for Pet Owners
• Your Cat's Nutritional Needs: A Science-based Guide for Pet Owners
• and the report on which those documents were based: Nutrient Requirements of Dogs and Cats
• Report briefs and other resources on Climate Change
• Booklet on Understanding Our Microbial Planet: The New Science of Metagenomics
• and a summary of the report on which that booklet was based: The New Science of Metagenomics, Report in Brief
• Institute for Laboratory Animal Research
• ILAR Journal
• Health Risks From Exposure to Low Levels of Ionizing Radiation: BEIR VII Phase 2