school energy&environment
Beginning of life
Between 3700 and 2500 million years ago, nothing was as it is today, neither the continents, nor the oceans, nor the atmosphere. In those times, the atmosphere was crossed by electric storms, and ultraviolet rays of the Sun. These phenomena transformed the substances that were present, by means of chemical reactions, into macromolecules that were able to reproduce and feed themselves. Life was born! Between 3200 and 2900 million years ago, thanks to the appearance of blue algae that could carry out chlorophyll photosynthesis, oxygen spread into the atmosphere. Thanks to the oxygen in the air and the nitrogen, life could also be transferred to the surfaces above the water. According to some scientists, life originated in puddles of water on the surface, others instead believe it originated in the ocean abysses, where there are sources of very hot water rich in minerals. To date, in these inhospitable environments we find bacteria that are able to live without light and receive energy from chemical oxidation of the sulphur compounds.
subjects dealt with in Beginning of life
The Beginning of life
Philosophers from ancient Greece believed that life was contained in matter itself and when conditions were favourable it would appear…
The evolution of life
The first living organisms we have proof of thanks to fossils, are three and a half billion years old. They…
Fossils
We may say that every day, palaeontology researches, active worldwide, present some new discovery : it may be a new…
special reports
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3 November 2014 / Life
Conan the bacterium
Have you ever leafed through the pages of a book of Guinness World Records? You can find records of all…
5 February 2010 / Life
Extreme bacteria
Four billion years ago Researchers from the Cnr with Bruno D’Argento and Giuseppe Geraci, geology and molecular biology professors from…
10 March 2006 / Water
Environment biotech
Biotechnology can be defined as the application of microbiology, genetic engineering and biochemistry for the treatment of waste materials by…
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4 March 2010 / Life
Biotechnological cleaners
Bacteria that "eat oil" In today’s society, more than 80% of human activities are closely connected to the production of…
10 May 2008 / Air
Bioindicators
Monitoring the environment Ecologic research is more and more oriented towards an assessment of the quality of the environment and…
15 March 2008 / Life
Biodiversity
Defining biodiversity Much is said about biodiversity and of the need to protect it. But what is biodiversity? And why…
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1 October 2005 / Life
Virus
A microscopic mystery Virus is an ancient Latin word that means poison. It sounds scary for such a small thing.…
15 February 2008 / Life
Looking for DNA
The discovery of DNA More than half a century ago, on 25 April 1953, a short article just 900 words…
4 April 2013 / Life
Carbon (14C) dating method
Radiocarbon dating In 1991, near the border between Austria and Italy, the body of the Similaun man, also known as…
-
3 November 2014 / Life
Conan the bacterium
Have you ever leafed through the pages of a book of Guinness World Records? You can find records of all…
5 February 2010 / Life
Extreme bacteria
Four billion years ago Researchers from the Cnr with Bruno D’Argento and Giuseppe Geraci, geology and molecular biology professors from…
-
10 March 2006 / Water
Environment biotech
Biotechnology can be defined as the application of microbiology, genetic engineering and biochemistry for the treatment of waste materials by…
4 March 2010 / Life
Biotechnological cleaners
Bacteria that "eat oil" In today’s society, more than 80% of human activities are closely connected to the production of…
-
10 May 2008 / Air
Bioindicators
Monitoring the environment Ecologic research is more and more oriented towards an assessment of the quality of the environment and…
15 March 2008 / Life
Biodiversity
Defining biodiversity Much is said about biodiversity and of the need to protect it. But what is biodiversity? And why…
-
1 October 2005 / Life
Virus
A microscopic mystery Virus is an ancient Latin word that means poison. It sounds scary for such a small thing.…
15 February 2008 / Life
Looking for DNA
The discovery of DNA More than half a century ago, on 25 April 1953, a short article just 900 words…
-
4 April 2013 / Life
Carbon (14C) dating method
Radiocarbon dating In 1991, near the border between Austria and Italy, the body of the Similaun man, also known as…
-
3 November 2014 / Life
Conan the bacterium
Have you ever leafed through the pages of a book of Guinness World Records? You can find records of all…
-
5 February 2010 / Life
Extreme bacteria
Four billion years ago Researchers from the Cnr with Bruno D’Argento and Giuseppe Geraci, geology and molecular biology professors from…
-
10 March 2006 / Water
Environment biotech
Biotechnology can be defined as the application of microbiology, genetic engineering and biochemistry for the treatment of waste materials by…
-
4 March 2010 / Life
Biotechnological cleaners
Bacteria that "eat oil" In today’s society, more than 80% of human activities are closely connected to the production of…
-
10 May 2008 / Air
Bioindicators
Monitoring the environment Ecologic research is more and more oriented towards an assessment of the quality of the environment and…
-
15 March 2008 / Life
Biodiversity
Defining biodiversity Much is said about biodiversity and of the need to protect it. But what is biodiversity? And why…
-
1 October 2005 / Life
Virus
A microscopic mystery Virus is an ancient Latin word that means poison. It sounds scary for such a small thing.…
-
15 February 2008 / Life
Looking for DNA
The discovery of DNA More than half a century ago, on 25 April 1953, a short article just 900 words…
-
4 April 2013 / Life
Carbon (14C) dating method
Radiocarbon dating In 1991, near the border between Austria and Italy, the body of the Similaun man, also known as…
from the Multimedia section
curiosities
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Life from space
According to some scientists life has always existed in the Universe just like the Universe...
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Bio-luminescence
Many sea animals, including a lot of fish and molluscs that live in the dark in the ocean depths...
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Bacteria as Sherlock Holmes
A drop of blood, a fragment of skin or a hair found on the scene of a crime can supply…
Down-pouring bacteria
It sounds incredible, but recent researches have found that bacteria can cause some atmospheric phenomena...
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Life from space
According to some scientists life has always existed in the Universe just like the Universe...
-
Bio-luminescence
Many sea animals, including a lot of fish and molluscs that live in the dark in the ocean depths...
-
Bacteria as Sherlock Holmes
A drop of blood, a fragment of skin or a hair found on the scene of a crime can supply…
Down-pouring bacteria
It sounds incredible, but recent researches have found that bacteria can cause some atmospheric phenomena...
-
Life from space
According to some scientists life has always existed in the Universe just like the Universe...
-
Bio-luminescence
Many sea animals, including a lot of fish and molluscs that live in the dark in the ocean depths...
-
Bacteria as Sherlock Holmes
A drop of blood, a fragment of skin or a hair found on the scene of a crime can supply…
-
Down-pouring bacteria
It sounds incredible, but recent researches have found that bacteria can cause some atmospheric phenomena...