Between 3700 and 2500 million years ago, the Earth was born. 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

vita_400x225_0005_nascite della vita

The Beginning of life

Philosophers from ancient Greece believed that life was contained in matter itself and when conditions were favourable it would appear…

vita_400x225_0007_evoluzione della vita

The evolution of life

The first living organisms we have proof of thanks to fossils, are three and a half billion years old. They…

vita_400x225_0006_fossili

Fossils

We may say that every day, palaeontology researches, active worldwide, present some new discovery : it may be a new…

special reports

  • 25 November 2014 / Life

    Years of plastics

    Waste, abandoned objects, disposed items, even though we try to ignore them, hide them and shift them, they pervade our…

    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…

    7 October 2014 / Life

    What language does science speak? 2nd part

    There is an old proverb that says “the apple does not fall far from the tree ”. Apparently it seems…

  • 18 September 2014 / Life

    What language does science speak?

    Do you remember the game called “Chinese whispers”? All the participants had to stand in line and the game started…

    2 July 2014 / Life

    A hoax? No thank you, I prefer to find out myself!

    In Italian, bufala: a hoax, also means a female buffalo – and a type of mozzarella cheese is made with…

    31 August 2013 / Life

    The Red List of Italian animals

    Biodiversity in Italy Italy has a rich biodiversity due to its distinctive geographic, climatic and historical characteristics. In particular, there…

  • 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…

    27 September 2012 / Life

    Over 7 billion people on Earth

    World population hits 7 billion Demographers have estimated that on 31 October 2011 world population reached the 7 billion mark,…

    11 June 2012 / Life

    Bats, facts and fiction

    Legend or fact? In ancient Rome, bats were nailed to the door of the house as a protection from witches…

  • 25 November 2014 / Life

    Years of plastics

    Waste, abandoned objects, disposed items, even though we try to ignore them, hide them and shift them, they pervade our…

    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…

  • 7 October 2014 / Life

    What language does science speak? 2nd part

    There is an old proverb that says “the apple does not fall far from the tree ”. Apparently it seems…

    18 September 2014 / Life

    What language does science speak?

    Do you remember the game called “Chinese whispers”? All the participants had to stand in line and the game started…

  • 2 July 2014 / Life

    A hoax? No thank you, I prefer to find out myself!

    In Italian, bufala: a hoax, also means a female buffalo – and a type of mozzarella cheese is made with…

    31 August 2013 / Life

    The Red List of Italian animals

    Biodiversity in Italy Italy has a rich biodiversity due to its distinctive geographic, climatic and historical characteristics. In particular, there…

  • 25 November 2014 / Life

    Years of plastics

    Waste, abandoned objects, disposed items, even though we try to ignore them, hide them and shift them, they pervade our…

  • 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…

  • 7 October 2014 / Life

    What language does science speak? 2nd part

    There is an old proverb that says “the apple does not fall far from the tree ”. Apparently it seems…

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