Articles by James Trefil

Endothelial cells under the microscope

Brave New World

Everything you wanted to know about stem cells, cloning and genetic engineering but were afraid to ask

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Seeing Science Six Miles Up

City patterns, farm history, ancient seabeds, old mountains and new, the why of clouds: take a look

This SeaWiFS view reveals the colourful interplay of currents on the sea's surface

Evidence for a Flood

Sediment layers suggest that 7,500 years ago Mediterranean water roared into the Black Sea

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When the Earth Froze

The rocks tell us that at least twice, the earth has frozen over from the poles to the equator

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When Plants Migrate

The study of how plants moved north after the last ice age could mean new directions for conservation

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Greetings from the Antiworld

Every subatomic particle has its opposite number, but luckily it's not true on a larger scale

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Nitrogen

It's colorless, odorless and gets no respect, but it's vital to the cycle of life— and we may be using too much

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Phenomena, Comment and Notes

Experiments at sea show we can cause phytoplankton to bloom in areas where it otherwise would not

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How the Body Defends Itself From the Risky Business of Living

Our cells take trillions of 'hits' each day from toxins both natural and man-made, but hardworking enzymes repair the damage

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Phenomena, Comment & Notes

Iceberg armadas and flickering climates: how one good idea led to more, and we appreciated anew the world's complexity

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The Great Martian Fossil Hunt

If bacterial life did arise on an Earth-like early Mars, we should be able to find its fossil remains preserved in those red rocks

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However It Began on Earth, Life May Have Been Inevitable

In a universe filled with prebiotic compounds,it may be only a small step for some of them to hook up in ways that lead directly to life

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