The Paleobiology Database is a public resource for the scientific community. Its purpose is to provide global, collection-based occurrence and taxonomic data for marine and terrestrial animals and plants of any geological age, as well as web-based software for statistical analysis of the data. From ...
The Great North American Secchi Dip-In
The Secchi Dip-In is a demonstration of the potential of volunteer monitors to gather environmentally important information on our lakes, rivers and estuaries. This website highlights the efforts of the Secchi Dip-In and contains lots of descriptions and photos of water quality assessment methods. Users ...
The Snowball Earth Hypothesis: Theory and Observations
The proceedings of the Geological Society of America, Earth System Processes, Global Meeting include a session titled The Snowball Earth Hypothesis: Theory and Observations. This website contains links to the session's abstracts as well as a link to the full meeting schedule.
Linear Systems and Optimization: Introduction to Linear Dynamical Systems
Introduction to applied linear algebra and linear dynamical systems, with applications to circuits, signal processing, communications, and control systems. Topics include: Least-squares aproximations of over-determined equations and least-norm solutions of underdetermined equations. Symmetric matrices, matrix norm and singular value decomposition. Eigenvalues, left and right eigenvectors, and dynamical interpretation. Matrix exponential, stability, and asymptotic behavior. Multi-input multi-outp
Linear Systems and Optimization: Convex Optimization II
Continuation of Convex Optimization I. Subgradient, cutting-plane, and ellipsoid methods. Decentralized convex optimization via primal and dual decomposition. Alternating projections. Exploiting problem structure in implementation. Convex relaxations of hard problems, and global optimization via branch & bound. Robust optimization. Selected applications in areas such as control, circuit design, signal processing, and communications. Course requirements include a substantial project.
Chanting and enchanting animals - Chap. 6/6 This video shows how frogs are becoming extinct. Researches travel to a stream to try and find a female toad that is disappearing. They look under rocks, in water, and under leaves. They have searched this area six times and have not found any female, they would like to find one so they can use it for reproduction and save it from extinction. They explain why there is such an amphibian extinction currently going on, the eviden
This video shows how frogs are becoming extinct. Researches travel to a stream to try and find a female toad that is disappearing. They look under rocks, in water, and under leaves. They have searched this area six times and have not found any female, they would like to find one so they can use it for reproduction and save it from extinction. They explain why there is such an amphibian extinction currently going on, the eviden
This short video discusses the two main types of these huge tortoises and show how these animals get water from cacti if there is no water available.
Mars Odyssey Science Cover Image
This still was created to for the cover of the journal Science (5 July 2002 issue). It shows epithermal neutron data represented by the colors overlayed on Mars topography. The blue colors represent high concentrations of hydrogen, indicating the strong possibility that water ice exists in those regions. ...
Bull sharks are known as man-eaters. National Geographic uses their "crittercam" to go with these powerful fish to see how they hunt. Bulls go from marine to fresh water with no problems and have been found thousands of miles upstream, in both the Mississippi and Amazon Rivers. You can see first hand in this movie a bull shark up close and learn information about them. Run time 02:52.
Lesson 249: Vocabulário de praia – Beach vocab Howling for Snow Divining Water on Europa Ocean Surface Topography From Space: El Nino/La Nina and the Pacific Decadal Oscillation Visit to An Ocean Planet: Salinity and Deep Ocean Currents Visit to An Ocean Planet: Earth's Hydrologic Cycle Studying Earth's Environment From Space Kepler Mission Star Field Lithograph Mars Europa, Jupiter's Icy Moon Harmonius Hippos and Crocs
Nesta lição você vai aprender várias palavras e termos relacionados a praia. Vocabulário básico: Praia – beach | Sol – sun Mar – sea | Água – water Oceano –...
Check out our website, brazilianportuguesepod.com and find out more how we can help you improving your Portuguese!
Visitors to this site can read and view satellite imagery about the most recent La Nina event, which produced less-than-normal snowfalls in Western North America. A TOPEX/Poseidon image of the Pacific ocean illustrates the warmer water and higher-than-normal sea surface height in the Western Pacific ...
This news article discusses data on Jupiter's moon Europa returned by NASA's Galileo and Voyager spacecraft and the possibility that an ocean of liquid water might exist on Europa and, with it, the possiblilty for extraterrestrial life.
Materials presented here are intended to help the learner understand the complex interactions between the oceans and the atmosphere that affect global weather and climate events. Users may learn how data from the TOPEX/Poseidon and Jason-1 satellites provide monitoring of oceanic conditions that may produce El-Nino/La Nina events, and help track the Pacific Decadal Oscillation (PDO), a long-term oceanic fluctuation. A selection of links to related sites is included.
This resource uses text, images, maps and a laboratory exercise to explain how differences in the temperature and salinity of ocean water cause the formation of deep-ocean currents. It is part of the Jet Propulsion Laboratory's "Ocean Surface Topography from Space" website. This material is also available on the "Visit to An Ocean Planet" CD-ROM.
The hydrologic cycle is the continual movement of water from one place to another and from one state of matter to another. This site describes a demonstration in which a teacher or small group of students constructs a simple model of the hydrologic cycle. Written instructions and a list of materials ...
Studying Earth's Environment from Space (SEES) includes four modules on the following topics: 1) Stratospheric Ozone, 2) Global Land Vegetation, 3) Oceanography, and 4) Polar Sea Ice Processes. The modules are designed to increase the use of satellite data in science classrooms by providing lecture ...
This two-sided 8in. X 10in. print document depicts the Kepler Mission Field of View imposed upon a star field that includes the constellations Cygnus and Delphinus on the front. A description of the mission, the star selection constraints, the location of the field in the night sky, distances to the stars, and the CCD layout is included on the back. An image on the back also illustrates the distance the field is from the galactic center and the size of the field of view. NASA-s Kepler mission is
This poster of Mars shows a full-disk mosaic, taken by the Mars Global Surveyor. The northern polar ice cap, Tharsis volcanoes, and Valles Marineris are visible. The accompanying text provides a brief description, history, and geology, as well as some statistical facts and significant dates in Mars ...
Europa: Another Water World is display artwork that has been reformatted into PDF format. Comparing Europa to Earth's size and oceans, it tells the story of the Galileo spacecraft's exploration of Europa in the late 1990's, and explains why scientists believe there may be an ocean of water underneath ...
They're ferocious predators, but these crocs still fear the hippo. Watch as the croc attacks an impala that is running through the water, nearly pulling it under, until the hippo comes to the rescue in attempts to save the impala from danger. Scenes may be disturbing for younger children. Professional video by National Geographic. Run time 01:56.
Howling for Snow
Divining Water on Europa
Ocean Surface Topography From Space: El Nino/La Nina and the Pacific Decadal Oscillation
Visit to An Ocean Planet: Salinity and Deep Ocean Currents
Visit to An Ocean Planet: Earth's Hydrologic Cycle
Studying Earth's Environment From Space
Kepler Mission Star Field Lithograph
Europa, Jupiter's Icy Moon
Harmonius Hippos and Crocs