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Articles on Organisms

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In primary production, inorganic carbon is used to build the organic molecules life needs. (Shutterstock)

How much life has ever existed on Earth?

Over two billion years from now, Earth will no longer be able to sustain life. A new study looks at how much life has ever existed and what this means for the discovery of new life-supporting planets.
Evolution has no final endpoint in mind. Uncle Leo/Shutterstock.com

Evolution doesn’t proceed in a straight line – so why draw it that way?

If you go by editorial cartoons and T-shirts, you might have the impression that evolution proceeds as an orderly march toward a preordained finish line. But that’s not right at all.
Just as organisms that infect us make changes in us - we too make changes in them and they grow and adapt to their human hosts. from www.shutterstock.com

How we change the organisms that infect us

Humans play host to many little passengers. Right now, you’re incubating, shedding or have already been colonised by viral, bacterial, parasitic or fungal microorganisms - perhaps even all of them.

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