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| Radio telescope: Source of mystery signals at the dish Posted: 25 May 2015 06:49 AM PDT Everyone likes solving a mystery, and the hunt for the source of strange signals detected by Australia's Parkes radio telescope is a classic. Although how "aliens" became involved in the story is more of a media mystery than a scientific one. But first to those strange signals: fast radio bursts (FRBs). The source of these powerful, millisecond bursts is unknown but we're getting closer to understanding them.  |
| Can you see what I hear? Blind human echolocators use visual areas of the brain Posted: 25 May 2015 05:11 AM PDT Certain blind individuals have the ability to use echoes from tongue or finger clicks to recognize objects in the distance, and use echolocation as a replacement for vision. Research shows echolocation in blind individuals is a full form of sensory substitution, and that blind echolocation experts recruit regions of the brain normally associated with visual perception when making echo-based assessments of objects.  |
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