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PROFILE: Jaime A. Pinkham

As head of the Department of Fisheries Resource Management for the Nez Perce tribe, Pinkham sees a strong link between the protection of biological and cultural diversity.

Article, Online Resource

The Ethnobotany Reserve Project

Traditional healers are among those hurt by logging and development of the rain forest. In Central America, they've joined forces with farmers and scientists to preserve Belize's plant diversity.

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Article, Online Resource

Profile: Harold C. Urey

This Nobel Prize–winning chemist contributed to several scientific fields. His remarkable body of work spanned chemistry, geochemistry, lunar science, and astrochemistry.

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Science Bulletin

The Rise of Oxygen

Follow geologists as they hunt for, pickaxe, and test rock samples from the 2.5 billion year old Huronian Supergroup, a sedimentary formation in Ontario, Canada. The scientists are in search of an exact record of how much oxygen gas Earth's developing atmosphere contained at key moments in geologic time. These crustal relics, which have interacted directly with ancient atmospheres, have the power to tell scientists when and how the Earth built up its incredible life-support system to foster more and more complex organisms.

Gravity: Making Waves

Science Bulletin

Gravity: Making Waves

Gravity may seem elementary. But proving Einstein's theories about it is quite hard. To do so, scientists are struggling to capture gravity's most elusive hallmark: the gravitational wave. This Astro Feature focuses on research at the Laser Interferometer Gravitational-Wave Observatory (LIGO) in Livingston, LA, where scientists have constructed a sprawling facility dedicated to the detection of minute changes in spacetime caused by gravitational waves traveling from energetic events in space.

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Curriculum Materials

SunScapes: Our Magnetic Star

Telescopes capture the Sun's ultraviolet light as beautiful images that are full of information about solar processes. This spectacular interactive photo gallery portrays the turbulent Sun in action.

Cassini-Hyugens Explores Saturn

Science Bulletin

Cassini-Huygens Explores Saturn

After a seven-year trip, the Cassini spacecraft arrived at Saturn in July 2004. Since then, Cassini has been capturing never-before-seen imagery of the ringed planet and its moons. By the mission's end in July 2008, the craft will have made 70 orbits of the Saturnian system, using cameras, magnetometers, spectrometers, and radio antennas to analyze the planet's magnetic field, composition, rings, atmosphere, and 33 moons more completely than ever before.
On January 14, the orbiter's Huygens probe descended through the murky atmosphere of Titan, Saturn's largest moon. The probe is the first in history to analyze and image Titan's atmosphere and surface characteristics.
Stop along Cassini's and Huygens's journey with the interactive at left. You can view historical images of Saturn, spy on the planet's rings, tour the Cassini orbiter, meet Saturn's moons, and learn what scientists expected to see on Titan. To visually recreate Cassini's route to Saturn, the animation uses real space data from the Digital Universe Project, a collaboration of NASA and the American Museum of Natural History. The Digital Universe includes dozens of datasets collected by the Museum and is constantly updated.

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