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Microbes

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Aerial image of vast blue ocean with reef

Breathing new life into Earth

New research shows evidence of early oxygen on our planet.

August 16, 2011

Scanning electron microscopy images reveal a microscopic, oval-shaped shell with tapered ends, from which an organism’s feet may have extended. The surface of the shell is made up of tiny bits of silica, aluminum and potassium, which the organism likely collected from the environment and glued to form armor.

Life after Snowball Earth

New fossils suggest rapid recovery of life after global freeze.

June 15, 2011

An image of the microfossil Characodictyon taken with a scanning electron microscope. This fossil was extracted using very weak acid from a carbonate rock. It's about 20 microns long - one-fifth the width of a human hair.

Ancient armor

Fossils from the Yukon reveal protective plates for microscopic organisms.

June 7, 2011