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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PODCASTS: Expanding With the Cosmos
Using the Atacama Cosmology Telescope (ATC), a 6.5-meter microwave collector in Chile, cosmologists are piecing together the early history of the known universe. In an exclusive American Scientist interview, Arthur Kosowsky—a member of the ATC team and a professor in the Department of Physics and Astronomy at the University of Pittsburgh—discusses how he is using ATC to reach back in time billions of years to search for gravitational waves that could verify inflation and reveal unprecedented details about how the cosmos was born.
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