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Getting a Taste of Space
Topic: Extreme Life
Summary: Samples of microorganisms and antibodies will be sent into near-Earth orbit this week and exposed to the extreme conditions of space. Such experiments can indicate whether life could travel in meteorites from one planet to another.

Essentially Immortal
Topic: Extreme Life
Summary: New research in Antarctica has revealed cells that might repair their DNA at extremely cold temperatures and, in doing so, could effectively be 'immortal'. If confirmed, the findings would have implications for the potential for life in the ice of worlds like Mars and Europa.

Cleaning Clean Rooms
Topic: Extreme Life
Summary: A recent study has found hardy 'extremophile' bacteria living in clean rooms at NASA. Some of the organisms are species that have never been detected anywhere else. The findings could help scientists understand how to keep spacecraft clean and prevent the transfer of Earth life to other planets.

The World's Oldest Bacteria
Topic: Extreme Life
Summary: Researchers have discovered DNA from living bacteria that are more than half a million years old. The finding could provide an important insight into ancient life on Earth and the evolution of life throughout history.

Brought Back to Life
Topic: Extreme Life
Summary: Scientists have been studying microbes trapped in ice that´s millions of years old to see if the microbes are still viable after being preserved for so long. Their findings are providing information about ancient life on Earth, as well as the potential for organisms to travel through space in the ice of comets.

Living in Acid, Harvesting Light
Topic: Extreme Life
Summary: Researchers have discovered a new thermophilic, chlorophyll-producing bacterium in Yellowstone National Park. The microbe is not only a new species, but it also belongs to a new phylum.

Biology's Dark Matter
Topic: Extreme Life
Summary: Less than one percent of microbes living in the environment can be cultured in the laboratory – a big hindrance for researchers trying to identify microbes in extreme environments. But a new device may help identify microbes without having to culture them at all.

The Limits of Organic Life
Topic: Extreme Life
Summary: A new report from the National Research Council discusses why the search for life in the solar system may need to include looking for life that doesn't have the same biochemistry as life on Earth.

Probing Earth's Most Isolated Ocean
Topic: Extreme Life
Summary: After recent successful tests, robotic vehicles will be sent to explore beneath the ice of the Arctic Ocean. The robots will search for unique forms of life on the seafloor of the world's most isolated ocean.

When Fungi Ruled the World
Topic: Extreme Life
Summary: One of the strangest mysteries of the fossil world concerns a tall, cylindrical structure dating to 420 million years ago. Some scientists have called it fungus, others a lichen, still others an alga. A new isotopic analysis has settled the debate, and has helped researchers hone their search for unknown life on other worlds.

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