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Search for alternative chemistries of life heats up

Ideas about directing evolution of life forms on Earth and finding life on other planets are rapidly morphing from science-fiction fantasy into mainstream science, says David Lynn, a chemist at Emory University.

“These areas of science are rapidly coming of age because of our increasing knowledge and advancing technology. It’s an exciting time. We’re on the threshold of answering fundamental questions including: What is life? Are there forms of life that we haven’t even yet imagined? Are we alone in the universe?”

A panel discussion, “Searching for Alternative Chemistries of Life on Earth and Throughout the Universe,” is set for Friday, Feb. 13, at 3 p.m., during the annual meeting of the American Association for the Advancement of Science (AAAS) in San Jose. Lynn co-organized the panel with Jay Goodwin, an Emory research fellow and an AAAS Science and Technology Policy Fellow.

In 2012, Lynn, Goodwin and four other scholars led the “Workshop on Alternative Chemistries of Life: Empirical Approaches,” supported by the National Science Foundation and the National Aeronautics and Space Administration. They pulled together an international group of nearly 40 scientists working at the boundary of non-living and living systems for the Washington workshop. The group included microbiologists, marine biologists, biochemists, geochemists, synthetic chemists, atmospheric chemists and virologists.

The resulting report, now available online, developed a set of research findings and next steps for exploring the concept of alternative chemistries.

The AAAS panel session will discuss many of the main ideas outlined in the workshop report, and the key question: How do we unravel the complex interplay of planetary, chemical and biological evolutionary networks, and what might we gain from the confluence?

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