Anywhere in the world

Bacteria live anywhere, even in the most extreme environments where no other form of life could survive. They can be found in the ocean depths, in the desert, in the hot waters of volcanic springs, inside rocks, in the frosty soil of the permafrost and even in environments so acidic they could destroy any other form of life. Many bacterial species live inside or on other organisms as symbionts or parasites. Symbiosis is an association between two or more species, which benefits each component; conversely, in parasitism only one of the members benefits from the association (the parasite), while the other (the host) is damaged by it.
Our body too is inhabited by very many species of bacteria. Every square centimetre of our skin is populated by thousands of bacterial cells that reproduce endlessly. Our gastrointestinal apparatus contains up to 500 different bacterial species, mostly living in the colon.

Special reports

  • 26 October 2022

    Praising the meatball

    Let's learn to transform waste into resources!

    10 October 2022

    Spider lullaby

    There are spiders that weave a classic web, that one we all know, to catch prey. There are others who…

  • 19 September 2022

    Double blow to dinosaurs

    The Main Asteroid Belt is between Mars and Jupiter, an enormous ring consisting of millions of large and small rocks…

    24 May 2022

    Amphibians in peril

    The International Union for Conservation of Nature (IUCN) warns: the extinction rate of amphibians is about 200 times greater than…

  • 8 March 2022

    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 2022

    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…

  • 26 October 2022

    Praising the meatball

    Let's learn to transform waste into resources!

  • 10 October 2022

    Spider lullaby

    There are spiders that weave a classic web, that one we all know, to catch prey. There are others who…

  • 19 September 2022

    Double blow to dinosaurs

    The Main Asteroid Belt is between Mars and Jupiter, an enormous ring consisting of millions of large and small rocks…

From the Multimedia section

  • life

    Bacteria

    Look

    life

    Bacterial colony

    Look

    life

    Cyanobacteria

    Look
  • life

    Intestinal bacteria

    Look

    life

    Microscopic structure of bacteria

    Look

    life

    Structure bacterium

    Look
  • life

    The growth curve of a bacterial colony

    Look

    life

    Various types of bacteria

    Look

    life

    A zoo in a drop

    Look

Facts

  • Down-pouring bacteria

    It sounds incredible, but recent researches have found that bacteria can cause some atmospheric phenomena...

    High-fashion bacteria

    Some bacteria, the Clostridia, were used to make textile fibres...

    Bacteria as detergents

    Enzymes are proteins produced by the cells of all living organisms...

  • Bacteria as miners

    The ability of chemoautotrophic bacteria to take energy from...

    Bacteria as Sherlock Holmes

    A drop of blood, a fragment of skin or a hair found on the scene of a crime can supply…

    Let’s eat!

    The economic importance of fungi is increased by the “edible” mushrooms...

  • Bio-luminescence

    Many sea animals, including a lot of fish and molluscs that live in the dark in the ocean depths...

    Predator mushroom

    <em>Pleutrotus ostreatus</em> mushroom does not have teeth or claws but it is...

    Decomposing organisms

    The ability to destroy organic matter has been used by man...

  • 13 May 2011

    Down-pouring bacteria

    It sounds incredible, but recent researches have found that bacteria can cause some atmospheric phenomena...

    High-fashion bacteria

    Some bacteria, the Clostridia, were used to make textile fibres...

  • Bacteria as detergents

    Enzymes are proteins produced by the cells of all living organisms...

    Bacteria as miners

    The ability of chemoautotrophic bacteria to take energy from...

  • Bacteria as Sherlock Holmes

    A drop of blood, a fragment of skin or a hair found on the scene of a crime can supply…

    Let’s eat!

    The economic importance of fungi is increased by the “edible” mushrooms...