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Host Peter Tonge visits the Weston Maple Sugar Project in Weston, Massachusetts. Shows the process of making maple syrup from tapping a maple sugar tree to boiling sap in a sugar shack. The second part of the program focuses on the basics of planning a garden in late winter. Also explains how to mix and apply liquid fertilizers. Originally aired as an episode of "The Good Green Earth."
Students will explore the basic parts of a plant, including the stem, roots, and leaves. This video describes the functions of each of these plant parts using various illustrations. Important terminology includes taproot, fibrous root, stem, sap, nutrients, and leaf.
Paleo-anthropologists believe Homo sapiens evolved in Africa 100-200 thousand years ago, and eventually moved out of Africa to populate the globe. But, how can researchers trace the specifics of that human migration? With support from the National Science Foundation, Florida Museum of Natural History Mammologist David Reed has undertaken a novel approach. He studies the genetic diversity and evolution of the human parasite that hitched a ride the whole way: lice.
European farmers no longer import some of their food because they have high efficiency farms and a food surplus. Because of this, some farmland has been set aside for nonfood crops, such as timber, oil-producing seeds, sports grasses, and plants and animals from which clothes are made. This British production shares creative and innovative uses of land formerly kept only for food crops.
Powerful forces have forged the conditions on Earth that have made life possible. The millennia have been witnesses to the formation of the planet: its singular position in relation to the sun, the evolution of the continents, and the birth of entire mountain chains. All of these elements combine to create Earth’s constantly changing climate. Homo sapiens emerge into this unpredictable and violent world, fighting for survival from the start. It is these early humans’ ability to adapt that allows them to triumph even in the face of incredible adversity and sets the path for modern man. Part of the "How Climate Made History" series.