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Brave New World
Everything you wanted to know about stem cells, cloning and genetic engineering but were afraid to ask
Seeing Science Six Miles Up
City patterns, farm history, ancient seabeds, old mountains and new, the why of clouds: take a look
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Evidence for a Flood
Sediment layers suggest that 7,500 years ago Mediterranean water roared into the Black Sea
When the Earth Froze
The rocks tell us that at least twice, the earth has frozen over from the poles to the equator
When Plants Migrate
The study of how plants moved north after the last ice age could mean new directions for conservation
Greetings from the Antiworld
Every subatomic particle has its opposite number, but luckily it's not true on a larger scale
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
Phenomena, Comment and Notes
Experiments at sea show we can cause phytoplankton to bloom in areas where it otherwise would not
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
Phenomena, Comment & Notes
Iceberg armadas and flickering climates: how one good idea led to more, and we appreciated anew the world's complexity
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
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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