SCIENCE IN THE NEWS WEEKLY
Microbes Surpass Low Energy Limit for Life
Microbes have been discovered on the sea floor that have exceptionally low metabolic rates, using so little oxygen that they barely qualify as life. Researchers think that they may have been living at the absolute minimum energy requirement needed to subsist for 86 million years.
In other news of the ancient past, the earliest direct example of insect pollination has been identified by scientists in 100-million-year-old amber blocks from Spain that include tiny invertebrates whose bodies are coated with pollen grains.
And archaeologists working in a rain forest in Guatemala have stumbled on a remarkable discovery: a room full of wall paintings and numerical calculations. The room, about the size of a walk-in closet, is part of the buried Maya city of Xultun.
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PODCAST & VIDEO: 3D Printing Replacement Body Parts
Regenerative medicine, a fledgling field with the aim of regrowing parts from a person’s own cells, is being amplified with 3D-printing technology, which can now use organic materials to create scaffolds that cells need to grow into their final forms. Richard Wysk, a professor of industrial and systems engineering at North Carolina State University, discusses the latest successes with this research, and the timeline for creating more complicated structures.
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