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Digital Zookeepers Take a Census
Cataloguing the taxonomy of an entire planet's history, a 'digital zoo' holds great promise for resolving century-old debates about how the Earth got to be such a rich spawning ground for life's diversity.
Photosynthesis: Take It or Leave It
A serendipitous examination of ocean waters last year brought a big surprise for a team of US and Canadian scientists, a surprise that's causing marine ecologists to rethink the details of how ocean ecosystems function.
A Greener Planetary Greenhouse
In recent years Earth-orbiting satellites have seen plants growing more vigorously than usual over northern parts of our planet.
Guerrero Negro is a popular destination for ecotourists to gaze at the gray whales, but scientists go to investigate an ecosystem that hold important clues to what life was like on early Earth.
Starved for Nitrogen
A team of researchers, including a NASA scientist, reports that an early-life nitrogen crisis may have triggered a critical evolutionary leap about 2 billion years ago.
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