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Join us to find out just what’s going on under the surface of the weird and wonderful world of plants.

Pick of the week

The history of germ theory

Today, we know that diseases like flu, chickenpox and pneumonia are caused by microscopic organisms – bacteria and viruses. But without this knowledge, we might have never developed ways to treat and prevent them. This week’s pick explores the discovery of germ theory and two of the scientists behind it: Louis Pasteur and Robert Koch.

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Fast Facts

Each issue of 'Big Picture' comes with a sprinkling of Fast Facts, fascinating snippets of information on the topic covered.

Browse through all of our Fast Facts indexed by topic