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Bacteria are unicellular organisms, in other words they are made of a single cell. Bacteria were the first organisms that lived on the Earth. They appeared 3 billion years ago in the waters of the first oceans. Bacteria or prokaryotes are the most widespread living beings in the Earth: in a spoonful of soil, for example, it is possible to find up to 10,000 billion bacteria. Their size is extremely small, in fact most bacteria cells have a diameter that ranges from 1 to 10 microns (one micron is equivalent to one thousandth of a millimetre): a line of one thousand neatly arranged bacteria, would be only one millimetre long.

subjects dealt with in Bacteria

Bacteria knowledge

Bacteria or prokaryotes are the most common living beings on Earth: one spoonful of soil can contain, for instance, up…

Man and bacteria

The first scientist to have studied and described bacteria was Anton van Leeuwenhoek (1632-1723). He was a textile dealer who…

Environment

A group of American scientists have succeeded to create some genetically modified organisms that can produce oil. The most popular…

Protection of water and soil

Pseudomonas are aerobic, rod-shaped bacteria. They can use over one hundred organic compounds as a source of energy and carbon.…

special reports

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    There is a beetle that has been invading the Italian countryside and cities for some time now, a small insect…

    16 June 2021 / Life

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    World Sea Turtle Day is held on 16 June. First established in 2008, the day is now supported by Sea…

    10 June 2021 / Life

    The world below

    Journey to the Centre of the Earth is a famous science fiction novel written by the great Jules Verne in…

  • 29 April 2021 / Life

    Etruscan shrews, ferocity in miniature

    Which is the tiniest micromammal, i.e. the smallest mammal on the planet? Up until almost half a century ago, it…

    10 March 2021 / Life

    International Year of Fruits and Vegetables 2021

    This year has been designated by FAO (Food and Agriculture Organisation of the United Nations) as the International Year of…

    8 March 2021 / Life

    8 March. We remember Rosalind Franklin, the great female DNA scientist.

    DNA was first isolated by Friedrich Miescher, a Swiss biochemist in 1869. It was a brilliant, but not complicated operation:…

  • 27 February 2021 / Life

    In search of the riders of icebergs

    International Polar Bear Day, set up by Polar Bears International, a non-profit organisation, was held on 27 February. The aim…

    8 January 2021 / Life

    Smart as a crow

    Some people call them "monkeys with feathers" because they can do clever things comparable to many of our monkey cousins.…

    18 December 2020 / Life

    The Christmas Star Tradition

    A plant that symbolises the Christmas season, decorating homes and shops and featured prominently by the florists and garden centres…

  • 26 July 2021 / Life

    Japanese beetles and other alien species

    There is a beetle that has been invading the Italian countryside and cities for some time now, a small insect…

    16 June 2021 / Life

    A turtle's life

    World Sea Turtle Day is held on 16 June. First established in 2008, the day is now supported by Sea…

  • 10 June 2021 / Life

    The world below

    Journey to the Centre of the Earth is a famous science fiction novel written by the great Jules Verne in…

    29 April 2021 / Life

    Etruscan shrews, ferocity in miniature

    Which is the tiniest micromammal, i.e. the smallest mammal on the planet? Up until almost half a century ago, it…

  • 10 March 2021 / Life

    International Year of Fruits and Vegetables 2021

    This year has been designated by FAO (Food and Agriculture Organisation of the United Nations) as the International Year of…

    8 March 2021 / Life

    8 March. We remember Rosalind Franklin, the great female DNA scientist.

    DNA was first isolated by Friedrich Miescher, a Swiss biochemist in 1869. It was a brilliant, but not complicated operation:…

  • 27 February 2021 / Life

    In search of the riders of icebergs

    International Polar Bear Day, set up by Polar Bears International, a non-profit organisation, was held on 27 February. The aim…

    8 January 2021 / Life

    Smart as a crow

    Some people call them "monkeys with feathers" because they can do clever things comparable to many of our monkey cousins.…

  • 18 December 2020 / Life

    The Christmas Star Tradition

    A plant that symbolises the Christmas season, decorating homes and shops and featured prominently by the florists and garden centres…

  • 26 July 2021 / Life

    Japanese beetles and other alien species

    There is a beetle that has been invading the Italian countryside and cities for some time now, a small insect…

  • 16 June 2021 / Life

    A turtle's life

    World Sea Turtle Day is held on 16 June. First established in 2008, the day is now supported by Sea…

  • 10 June 2021 / Life

    The world below

    Journey to the Centre of the Earth is a famous science fiction novel written by the great Jules Verne in…

  • 29 April 2021 / Life

    Etruscan shrews, ferocity in miniature

    Which is the tiniest micromammal, i.e. the smallest mammal on the planet? Up until almost half a century ago, it…

  • 10 March 2021 / Life

    International Year of Fruits and Vegetables 2021

    This year has been designated by FAO (Food and Agriculture Organisation of the United Nations) as the International Year of…

  • 8 March 2021 / Life

    8 March. We remember Rosalind Franklin, the great female DNA scientist.

    DNA was first isolated by Friedrich Miescher, a Swiss biochemist in 1869. It was a brilliant, but not complicated operation:…

  • 27 February 2021 / Life

    In search of the riders of icebergs

    International Polar Bear Day, set up by Polar Bears International, a non-profit organisation, was held on 27 February. The aim…

  • 8 January 2021 / Life

    Smart as a crow

    Some people call them "monkeys with feathers" because they can do clever things comparable to many of our monkey cousins.…

  • 18 December 2020 / Life

    The Christmas Star Tradition

    A plant that symbolises the Christmas season, decorating homes and shops and featured prominently by the florists and garden centres…

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