Jill Tarter Is Still Looking for Extraterrestrial Intelligence
Jill Tarter, Director of the Center for SETI Research, is searching for signs of extraterrestrial life. But what kinds of signals is she hoping to find? Tarter explains that her instruments are on the lookout for anything that couldn't be produced by nature—some very narrow radio signal that would indicate intelligent life. In addition to radio signals, Tarter and her colleagues are also looking for optical signals. "What we're looking for is time compression. We're looking for really bright flashes that last a nanosecond or less," she says in her Big Think interview. Such a bright flash could indicate the existence of an engineered signal.
And what if beings on other planets are searching for us? Most likely they would detect our television and radio signals. "The signals are intended for our local neighborhoods, but in fact, many of those signals go on beyond the earth and travel and spread out in a bubble around the earth that gets bigger one light year per year," she says.
We're more dependent on them than we realize.
- Scientists says our survival depends on biodiversity.
- A natural climate strategy we often forget.
- Seeing our place among the Earth's living creatures.
There's a high social cost that comes with lighting up.
While short-term results are positive, there is mounting evidence against staying in ketosis for too long.
- Recent studies showed volunteers lost equal or more weight on high-carb, calorie-restricted diets than low-carb, calorie restricted diets.
- There might be positive benefits to short-term usage of a ketogenic diet.
- One dietician warns that the ketogenic diet could put diabetics at risk for diabetic ketoacidosis.
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