Why We Probably Aren't Alone in the Universe
There is not much middle ground in the debate over whether life exists beyond planet Earth. Astronomers either believe the odds of life are impossibly rare or mundanely common.
What's the Latest Development?
While the Kepler space telescope continues to find planets outside our solar system, the debate over extraterrestrial life, so to speak, rages on. Paul Davies, physicist and cosmologist at Arizona State University, argues that even given recent discoveries, the odds are against life existing elsewhere. Davies says the vast number of other worlds is actually misleading because none have been similar in size to Earth or in distance to their parent star, "that the statistical improbability of organic molecules lining up just as they did to create life as we know it is greater than even so large a sample group could overcome."
What's the Big Idea?
Other scientists, including many at NASA, argue that the basic elements for life--hydrocarbons, water and an energy sourse--are in such plentiful supply that, given some time, it's bound to pop up somewhere. Perhaps it will not be intelligent life, or even life as we know it, but astronomers even suggest there may be cellular organisms within our solar system. The watery moons of Jupiter are one candidate, particularly Europa where the gravitational attraction to Jupiter generates enough heat to keep water in a liquid state. Later this year, a NASA rover will investigate the Martian soil for evidence of past life.
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Researchers discover a link between nonverbal synchronization and relationship success.
- Scientists say coordinating movements leads to increased intimacy and sexual desire in a couple.
- The improved rapport and empathy was also observed in people who didn't know each other.
- Non-verbal clues are very important in the development stages of a relationship.
Humans evolved to live in the cold through a number of environmental and genetic factors.
- According to some relatively new research, many of our early human cousins preceded Homo sapien migrations north by hundreds of thousands or even millions of years.
- Cross-breeding with other ancient hominids gave some subsets of human population the genes to contend and thrive in colder and harsher climates.
- Behavioral and dietary changes also helped humans adapt to cold climates.
The comics titan worked for more than half a century to revolutionize and add nuance to the comics industry, and he built a vast community of fans along the way.
- Lee died shortly after being rushed to an L.A. hospital. He had been struggling with multiple illnesses over the past year, reports indicate.
- Since the 1950s, Lee has been one of the most influential figures in comics, helping to popularize heroes that expressed a level of nuance and self-doubt previously unseen in the industry.
- Lee, who's later years were marked by some financial and legal tumult, is survived by his daughter, Joan Celia "J.C." Lee.
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