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Article: Zircons Recast Earth's Earliest Era

Article

Article: Zircons Recast Earth's Earliest Era

Rocks older than 4 billion years are not available to study, making the first 500 million years of Earth's history particularly mysterious. But cutting-edge techniques are now allowing geologists to study survivors of Earth's early era.

Article

Diabetes in a Dish: Using Stem Cells to Study Disease

While technological advances are making it easier for the 21 million diabetics in the United States to manage healthy lives, diabetes is still a disease that requires vigilance. See how scientists are using stem cells to find a cure.

Species and Sprawl: Humans

Article

Species and Sprawl: Humans

Sprawl is affecting Homo sapiens as it does many other species: it alters our habitat, hampers our mobility, and diminishes odds for survival.

Species and Sprawl: Wood Turtles

Article

Species and Sprawl: Wood Turtles

See how scientists are using radio telemetry to gain a clearer picture of how much and what kind of space wood turtles need to survive.

Species and Sprawl: Yellow Starthistle

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Species and Sprawl: Yellow Starthistle

Seeds can't move by themselves, so they rely on moving things to give them a lift. Discover how cars are taking homespun seed dispersal mechanisms to a new level.

Species and Sprawl: Mountain Lions

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Species and Sprawl: Mountain Lions

What's the animal-friendly antidote to California's urbanization? Some believe the solution is to make the corridors between disparate patches of wild lands truly useable by many different species.

Biogeography Begets Biodiversity

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Biogeography Begets Biodiversity

Discover how the geological and climatic changes that have unfolded over millions of years in Vietnam have set the stage for an extraordinary richness of biodiversity.

Biodiversity in the Crossfire

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Biodiversity in the Crossfire

See how scientists are racing to reveal Vietnam's biological riches before many species and their habitats disappear from the country's landscape due to expanding development and human activity.

Article

The Sorry Story of Georges Bank

Find out why this huge shoal between Massachusetts' Cape Cod and Nova Scotia's Cape Sable Island is one of the world's most important fishing resources — and why it's now at risk.

Science Stays Alert, Part I: Birds Under Scrutiny

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Science Stays Alert, Part I: Birds Under Scrutiny

In a handful of cases, humans have contracted H5N1 from birds and then passed the virus to other humans. Even so, doctors and scientists are taking great pains to prepare for the possibility of such a pandemic.

The Enigma of High Energy Cosmic Rays

Article

The Enigma of High Energy Cosmic Rays

In 1912, Viktor Hess took to the sky in a hot-air balloon and discovered a radioactive energy now called “cosmic rays.” Travel to Argentina to see how scientists now hope to discover at long last where the highest-energy cosmic rays are coming from.

Article: Sloan Sweeps the Sky

Article

Article: Sloan Sweeps the Sky

Mapping one-quarter of the heavens in three dimensions — that’s the ambitious mission for the Sloan telescope at the Apache Point Observatory in the Sacramento Mountains of New Mexico. Find out what astronomers have discovered so far.

Interactive

Interactive: A Hotspot Trail

Yellowstone National Park lies above a stationary hotspot deep in Earth's mantle. See how previous volcanic eruptions of the hotspot have left a trail of calderas that ends, at the moment, with Yellowstone.

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