A map from 1911 of the Nile River basin, showing the watershed dividing line between the Nile drainage, Congo drainage, and the coastal drainage systems to the Red Sea and Indian Ocean. The map shows the Nile River headwaters in Lake...

A resource to help understand that the movement of the Earth's tectonic plates is caused by convection. The plates' movements cause geologic features on the Earth's surface.

Young students are introduced to the complex systems of the Earth through numerous lessons on its natural resources, processes, weather, climate and landforms. Key earth science topics include rocks, soils and minerals, water and natural...

This Extreme Science article looks at the Amazon River and it is called the world's greatest river.

A study map from 1899 using North America to illustrate various geographic terms commonly found on maps. The map shows examples of continent, river valley, peninsula, strait, bay, political boundary, lakes, island, ocean, cape, sound,...

This is a highly detailed map of the Nile River basin from the Tropic of Cancer south to the river's source at Victoria Nyanza (Lake Victoria). This map shows both the Blue Nile and White Nile river systems in 1903. Major cities, trade...

A map of Asia from 1901 showing the physical features of the region including mountain systems, plateaus, basins, plains, deserts, lakes, rivers, and coastal features and islands. The map shows major ocean currents, the mean annual...

A map from 1868 of Asia showing physical features and natural resources of the region. The map shows political boundaries of the time, with capitals, major cities, and ports. The map shows mountain systems with black lines of variable...

A map from 1901 of Europe, showing the physical features of the region. This map is color-coded to show general elevations from sea level to over 6,500 feet, mountain systems, drainage divides, lakes, rivers, coastal features, and the...

A map from 1901 of North America, Central America, the Caribbean, and Greenland showing general land elevations, mountain systems, rivers, coastal features, and ocean currents. The map is color-coded to show land elevations ranging from...

A map from 1901 showing mean annual rainfall in South America. The map shows the equatorial rain belt in July and in January, the direction of prevailing winds and their effect on rainfall patterns. The map shows regions ranging from...

A map from 1898 showing mean annual rainfall in South America. The map shows the equatorial rain belt in July and in January, the direction of prevailing winds and their effect on rainfall patterns. The map shows regions ranging from...

A map from 1901 of the United States showing the physical features of the area, including mountain systems and highlands, plateaus, basins, plains, lakes, rivers, and coastal features. The map is color-coded to show land elevations from...

Ibiza provides an excellent example of the interaction between the marine and coastal ecosystems. The dense prairies of oceanic Posidonia (seagrass), an important endemic species found only in the Mediterranean basin, contain and support...

The Pitons, cirques and remparts of Reunion Island site coincides with the core zone of La Reunion National Park. The property covers more than 100,000 ha or 40 % of La Reunion, an island comprising two adjoining volcanic massifs located...