Organization: Library of Congress (LOC)
“Halloween had its beginnings in an ancient, pre-Christian Celtic festival of the dead. The Celtic peoples, who were once found all over Europe, divided the year by four major holidays.” (LOC) This page contains a brief history of Halloween and the origins of some holiday traditions.
Organization: Public Broadcasting Service (PBS)
“In this companion Web site to the NOVA program Mountain of Ice, about a climb to the top of Antarctica’s highest mountain, Vinson Massif, read an interview with explorer Jon Krakauer, go behind the scenes with producer Liesl Clark, see what coastlines around the world would look like if the West Antarctic Ice Sheet collapsed, and explore the life cycle of a glacier.” (PBS)
Organization: NASA/Langley Research Center (LRC)
“Trees that have leaves that change color in the fall and drop to the ground are called deciduous trees. Many people think deciduous trees lose their leaves because of cold weather and frost, a common misconception, but actually the length of the day determines when trees begin the process of dropping their leaves…. Pigmentation in the leaves and the length of the days are just two factors that affect the color of leaves in the autumn.” (LRC) Learn why leaves change color at this quality website, chosen by ProQuest’s SIRS editorial team.