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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.…

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    Sea turtles are the oldest living reptiles today. They have been inhabiting the oceans for over 150 million years without…

    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…

    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…

  • 16 June 2021 / Life

    A turtle's life

    Sea turtles are the oldest living reptiles today. They have been inhabiting the oceans for over 150 million years without…

  • 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

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    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…

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