Bar chart of countries ranked by their net migration flow as of 2005. While the highest net in-flow is generally into large rich countries (USA, Spain, Germany etc.) Afghanistan had the second highest net inflow thanks to returning refugees.
Students learn to solve minimum cost network flow problems.
The Adirondack Mountains tour is part of the New York Landscape Regions Collection of Google Earth Tours, created by a group of New York State science educators. This tour provides an introduction to the geology of the Great Range and the High Peaks as viewed from Algonquin Peak. It also addresses the issue of acid rain, which is a persistent environmental concern in the Adirondacks.
The Allegheny Plateau tours are part of the New York Landscape Regions Collection of Google Earth Tours, created by a group of New York State science educators. These tours showcase examples of Allegheny geology, including the geomorphology of glacial features near Tully, New York, southern Cayuga Lake, the geology and geomorphology of Letchworth State Park and its waterfalls, as well as waterfalls and creeks in the Ithaca Gorges. Schoharie Creek can be toured from its mouth to its source, the St. Lawrence Chesapeake and Valley Heads Moraine can be investigated to examine drainage patterns, and another tour investigates the unique geology and ecology of the Rome Sand Plains. Environmental tours also address the 2006 flooding in the Allegheny Plateau near Port Jarvis and Livingston Manor and provide an overview of the water supply system of the City of New York.
The Atlantic Coastal Plain tour is part of the New York Landscape Regions Collection of Google Earth Tours, created by a group of New York State science educators. This tour introduces students to glacial erratics on Long Island, the Ronkonkoma terminal moraine, and the Rock Hill erratic. Coastal erosion and deposition can be studied by viewing dunes, beaches, and wave cut banks.
The Erie Ontario Lowlands tour is part of the New York Landscape Regions Collection of Google Earth tours. This tour includes glacial history, features, and views of Niagara Falls, the Niagara Escarpment, current and former spillways, and the locks at Lockport, New York. Students can also learn about the geology and glacial history of Canandaigua Lake, one of New York's Finger Lakes, which discharges into the Lowlands. There is also a lab activity in which students analyze maps, images, and information to perform an environmental assessment of the Cascade Mill development.
The Hudson Highlands tour is part of the New York Landscape Regions Collection of Google Earth Tours, created by a group of New York State science educators. This tour introduces Hudson Highlands geology, including glaciology at Bear Mountain, views of the Highlands, and the Ramapo Fault to the south. It also offers other information about the area, including some animals, New York City's water supply, and the Great Swamp.
The Hudson Mohawk Lowlands tour is part of the New York Landscape Regions Collection of Google Earth tours, created by a group of New York State science educators. This tour introduces students to limestone quarrying along the western shore of the Hudson River south of Catskill, New York. They can follow the courses of the Mohawk River and Erie Canal eastward to the Cohoes Falls and the confluence of the Mohawk with the Hudson River. It also provides a look at issues involved with the cleanup of PCB-laden sediments in the Hudson River.
The Newark Lowlands tour is part of the New York Landscape Regions Collection of Google Earth Tours created by a group of New York State science educators. This tour lets students see the Ramapo Fault at the Lowlands' northwestern boundary and the Palisades Sill on the western shore of the Hudson River. The Sparkill Gap, a pre-Ice Age weak spot in the Palisades Sill through which the Hudson River once flowed, can be observed. There is also an activity in which students explore the economic, social, and environmental issues associated with constructing the Tappan Zee Bridge over the Hudson River.
The St. Lawrence Lowlands tour is part of the New York Landscape Regions Collection of Google Earth Tours. This tour allows students to explore the Thousand Islands, formed of granite which has withstood the erosive energy of the St. Lawrence River, creating thousands of islands ranging in size from single rocks to over 25 square miles. There is also an activity in which students map some of the many shipwrecks that have accumulated at the entrance to the St. Lawrence Seaway.
The Taconic Mountains tour highlights the geology and natural environment of several landscape regions, including the structure of the Highlands Province basement rocks, which were affected by the Taconic Orogeny. Students can view biotite-rich schists and the tight isoclinic folds of the Walloomsac Formation, as well as the Taconic angular unconformity at the south end of Becraft Mountain. Bedding thrusts are also evident within the Roundout Formation and overlying Manlius Formation. They can also examine metamorphosed Briarcliff Dolostone containing yellow, white and black chert layers and Everett Phylite, which represents a metamorphic lithologic transition from slate to phyllite. Dramatically folded calcareous rocks are visible at the Bennington, Vermont bypass, and students can also view Stark's Knob, where pillow lavas formed as Ordovician basalts erupted under the waters of a shallow sea.
The Manhattan Prong tour is part of the New York Landscape Regions Collection of Google Earth Tours. This tour takes students to Central Park in New York City to see metamorphic rock, glacial features, differential weathering, and Cleopatra's Needle, an Egyptian obelisk brought to the city in 1881. They can also examine bedrock, float, mass wasting, jointing, and glacial polish in the Pound Ridge Reservation, and observe a metamorphic outcrop of Fordham Gneiss near Katonah, New York. The convergent boundary features of the Staten Island serpentine belt, formed during the Taconic Orogeny, can be viewed, and students can follow the Mianus River Gorge as it crosses the Cameron's Line fault. There is also a tour of the New York City water supply system with a lab activity to accompany it.
The Tug Hill Plateau tour is part of the New York Landscape Regions Collection of Google Earth Tours, created by a group of New York State science educators. The tour introduces students to the many waterfalls of the plateau, which is formed of layers of sandstone and shale. It also points out that the plateau recieves more snow than any location east of the Rocky Mounatins due to the lake-effect from Lake Ontario and its elevation, which is 2,100 feet at the highest point. There is also a visit to a fish hatchery.
In this Interactive Lecture Demonstration, students will attempt to predict the content of articles on the Health Science pages of French newspapers by reading headlines. They then read the actual articles and reflect on the actual content of the news articles.
In this video segment adapted from NOVA scienceNOW, MIT engineer Dava Newman is working to replace today's bulky, inflated space suits with a radical, sleek design that may one day allow astronauts to walk easily on Mars.
Observe the Nisqually Glacier at Mount Rainier in this video segment from NatureScene.
This online database of our North American Ethnographic collection includes artifacts from every Native American cultural region in North America, from Achomawi and Acoma to Zia and Zuni. The database allows you to see all artifacts for a specific culture, search by object type, material, locale, and donor, find out what items are currently on display and learn about recently acquired artifacts. There are two ways to search the collection as a picture-only gallery, or as a catalog that describes each artifact's provenance (country, locale, culture), materials, dimensions, and year of acquisition.
In this activity, students use Google Earth and information from several websites to investigate some of the consequences of climate change in polar regions, including the shrinking of the ice cap at the North Pole, disintegration of ice shelves, melting of Greenland, opening of shipping routes, effects on polar bears, and possible secondary effects on climate in other regions due to changes in ocean currents. Students learn to use satellite and aerial imagery, maps, graphs, and statistics to interpret trends accompanying changes in the Earth system.
This article profiles Gerrit Vyn and Martha Fischer, sound recordists with the Macaulay Library, Cornell University, and their expedition to Nunavut, Canada, to record male sanderling vocalizations.
A useful website for visualizing the relationship of different OECD countries based on a number of quality of life indicator variables.