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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

  • 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…

    24 November 2020 / Life

    The glow of duck-billed platypuses

    It's easy to answer "which is the strangest animal?". The answer: the platypus. These strange creatures live only in Australia…

    12 October 2020 / Life

    Crispr-Cas9, the gene factory

    Nobel 2020. The biochemists Emmanuelle Charpentier, French, and Jennifer A. Doudna, from the United States, were awarded the most important…

  • 10 May 2020 / Life

    A virus’s life

    What are viruses Virus is a Latin word meaning poison. Viruses do not eat, breathe, move or reproduce on their…

    29 February 2020 / Life

    Let's find out about viruses

    Parasites at the edge of life Virus is a Latin word meaning poison. Viruses are pathogens (they make you ill)…

    31 October 2019 / 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…

  • 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…

  • 24 November 2020 / Life

    The glow of duck-billed platypuses

    It's easy to answer "which is the strangest animal?". The answer: the platypus. These strange creatures live only in Australia…

    12 October 2020 / Life

    Crispr-Cas9, the gene factory

    Nobel 2020. The biochemists Emmanuelle Charpentier, French, and Jennifer A. Doudna, from the United States, were awarded the most important…

  • 10 May 2020 / Life

    A virus’s life

    What are viruses Virus is a Latin word meaning poison. Viruses do not eat, breathe, move or reproduce on their…

    29 February 2020 / Life

    Let's find out about viruses

    Parasites at the edge of life Virus is a Latin word meaning poison. Viruses are pathogens (they make you ill)…

  • 31 October 2019 / 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…

  • 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…

  • 24 November 2020 / Life

    The glow of duck-billed platypuses

    It's easy to answer "which is the strangest animal?". The answer: the platypus. These strange creatures live only in Australia…

  • 12 October 2020 / Life

    Crispr-Cas9, the gene factory

    Nobel 2020. The biochemists Emmanuelle Charpentier, French, and Jennifer A. Doudna, from the United States, were awarded the most important…

  • 10 May 2020 / Life

    A virus’s life

    What are viruses Virus is a Latin word meaning poison. Viruses do not eat, breathe, move or reproduce on their…

  • 29 February 2020 / Life

    Let's find out about viruses

    Parasites at the edge of life Virus is a Latin word meaning poison. Viruses are pathogens (they make you ill)…

  • 31 October 2019 / 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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