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| Martian polygons and deep-sea polygons on Earth: More evidence for ancient Martian oceans? Posted: 27 Jul 2012 02:19 PM PDT Debate over the origin of large-scale polygons (hundreds of meters to kilometers in diameter) on Mars remains active even after several decades of detailed observations. Similarity in geometric patterns on Mars and Earth has long captured the imagination. Geologists have examined these large-scale polygons and compared them to similar features on Earth's seafloor, which they believe may have formed via similar processes.  |
| Lucid dreamers help scientists locate the seat of meta-consciousness in the brain Posted: 27 Jul 2012 06:55 AM PDT Studies of lucid dreamers show which centers of the brain become active when we become aware of ourselves in dreams. The human capacity of self-perception, self-reflection and consciousness development are among the unsolved mysteries of neuroscience. Now scientists are shedding new light on this area.  |
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