We are looking for Europeans of different nationalities that can speak about the refugee invasion in your country and how this REALLY is affecting you. Are you in Hungary, Greece, Germany, France, Italy, Austria or another country being heavily invaded? Please reach out: views@redicecreations.com or @rediceradio We want to speak with you!

Mars Announcement Raises Question: What Is Life?
2013-03-18 0:00


NASA officials announced March 12 that ancient Mars could have supported primitive life. But this begs the question: What exactly constitutes life?

Merriam-Webster.com defines life as "an organismic state characterized by capacity for metabolism, growth, reaction to stimuli and reproduction." But there’s no single satisfactory definition of life.

"I think it is a mistake to try to define life, because we have only one example of life, familiar life on Earth, and we have reason to believe that this example may be unrepresentative of life in general," Carol Cleland, a philosopher of science at the University of Colorado, Boulder, told LiveScience in an email.

Defining life

Aristotle made the first attempt at a definition, describing life as something that grows, maintains itself and reproduces. But this definition would exclude mules, which are sterile, while including things like fire.

Calling life something that has a metabolism, the ability to take in energy to grow or move and excrete waste, is no good either; cars do this, for example.

In 1944, the physicist Erwin Schrödinger gave life a definition based on the second law of thermodynamics, which states that the entropy, or disorder, of a closed system increases over time. Schrödinger defined life as something that decreases or maintains its entropy. Yet this definition fails because it includes crystals, which resist entropy by forming highly structured lattices.

Trying to define life by its qualities is the wrong approach, Cleland said. As an example, she cites scientists’ early attempts to define water in terms of properties like being wet, transparent and a good solvent. "We didn’t ’define’ water as H2O, but rather discovered, in the context of molecular theory, that it is a chemical substance composed mostly of H2O molecules," Cleland said.

Life on Earth is typically divided into two main groups: the cellular life forms, which include archaea, bacteria and eukarya (all the plants and animals), and non-cellular life forms, like viruses. Whether viruses, which can replicate only inside the cells of a host organism, count as "life" is debated.


Read the full article at: space.com

Related Articles

Latest News from our Front Page

EU Must Get Ready: UN Predicts 1.4 MILLION Migrants to Arrive in Next Two Years
2015-10-04 3:05
Comment: The UN know and encourage these kinds of numbers to come into Europe, see comment below the article for more. The UN refugee agency (UNHCR) announced that it expects 700,000 migrants and refugees to reach Europe via the Mediterranean this year and predicted at least the same amount again in 2016. A spokesman for UNHCR Adrian Edwards confirmed that the figures ...
Oops: Did CNN Just Admit the U.S. Is Working with ISIS? & The ISIS Conspiracy
2015-10-04 1:33
Because we wouldn't want Russia to have an accidental skirmish with the U.S.-led ISIS coalition, now would we? Source: youtube.com The ISIS Conspiracy By Brandon Martinez The ISIS Conspiracy is a video series created by independent journalist and writer Brandon Martinez and is based on his book The ISIS Conspiracy: How Israel and the West Manipulate Our Minds Through Fear. In Part I Martinez ...
Sydney: Activists deliver petition to send refugees to PM's electorate
2015-10-04 0:19
Police confronted activists concerned with plans to resettle 12,000 Syrian refugees in Australia during a political stunt staged outside the house of Prime Minister Malcolm Turnbull in Sydney on September 27, 2015. Watch the video here: Sydney: PM urged to resettle Muslim refugees in eastern suburbs Members of the right-wing Party For Freedom delivered a petition urging the PM to resettle the ...
Umpqua Shooter Harper-Mercer Left Note: Wanted to “Be Embraced By the Devil” and “Welcomed in Hell”
2015-10-03 23:56
Has the media come out against left-hand path occultists who worship the devil yet? No, they continue to blame gun toting conservative "White-supremacists" for this one. Umpqua Shooter was identified as Chris Harper Mercer last night. Chris Mercer killed 9 people before being shot by police. Chris Harper Mercer was an atheist. (MySpace Image) The profile contains several Irish Revolutionary Army images ...
Jews In America Demand Washington Admit More Syrian “Refugees”
2015-10-03 23:09
In what is becoming a re-occurring theme here on this website, the organized Jewish community in America is once again openly and self-righteously demanding the United States accept as “refugees” even more unskilled, uneducated, backwards people who have no ties to or affinity towards this country and its traditions. As noted here recently, the organized international Jewish community, countless Jewish charities ...
More News »