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When a cat gets stuck in a tree and some ducks need help crossing the street, these young superheroes are there to save the day! With high-frequency words and simple, repetitive sentences, this brigh …

Lighthouses have helped sailors navigate for centuries. But lighthouses are not built like they used to be. Learn how innovations like computers and solar power have improved lighthouses over time. C …

On a clear night, you should be able to see the stars. But we cannot always see them. Light pollution prevents us from seeing the stars and causes other problems as well. Learn about light pollution …

Bring the pages of history to life with primary source documents! Primary sources help students achieve literacy in social studies by teaching them how to investigate and reflect on various social, e …

The year is 1977, and as England goes to the dogs, university student, Julie Kent, reinvents herself as Sterling – an outrageous thieving Goth with a dodgy sex life and an appalling attitude. Over th …

General medicine is the medical specialty dealing with the prevention, diagnosis, and treatment ofadult diseases. Haematology, is the branch of medicine concerned with the study of the cause, prognos …

Microbial pathogens are microorganisms that are capable of producing disease. Virtually all groups ofbacteria have some members that are pathogens. A human pathogen is a pathogen (microbe ormicroorga …

Water microbiology is concerned with the micro-organisms that live in water, or can be transported from one habitat to another by water. Water can support the growth of many types of micro-organisms. …

Current Reconstructive Surgery begins with a valuable review of the principles of wound healing and wound repair. Itssubsequent chapters meticulously examine pertinent reconstructive topics and prese …

The endometrium is the inner epithelial layer, along with its mucous membrane, of the mammalian uterus. It has a basal layerand a functional layer; the functional layer thickens and then is shed duri …