How Do Batteries Work?
A battery stores energy as chemicals and releases it as electricity on demand. This guide explains the chemistry inside a cell, the main…
Dr. Nadia Okoro
476 reading now
Dr. Nadia Okoro
Science & Health Writer
Dr. Nadia Okoro holds a PhD in molecular biology and writes about medicine, public health and scientific research with an emphasis on evidence.
Credentials: PhD, Molecular Biology
The Periodic Table Explained
The periodic table organises every known chemical element by its structure and properties. This plain-English guide explains what the…
Dr. Nadia Okoro
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What Is a Black Hole?
A black hole is a region of space where gravity is so strong that nothing, not even light, can escape. This clear guide explains how black…
Dr. Nadia Okoro
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What Causes Earthquakes?
Earthquakes happen when stress built up in the Earth's crust is suddenly released along faults. This guide explains plate tectonics, how…
Dr. Nadia Okoro
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The Theory of Evolution, Explained
Evolution by natural selection is the process that explains the diversity of life on Earth. This clear guide covers how natural selection…
Dr. Nadia Okoro
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Photosynthesis Explained
Photosynthesis is how plants, algae and some bacteria turn sunlight, water and carbon dioxide into food and oxygen. This clear guide covers…
Dr. Nadia Okoro
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How Vaccines Work
Vaccines train your immune system to recognise a germ before you ever meet the real thing. This plain-English guide explains antibodies…
Dr. Nadia Okoro
370 reading now
How to Reduce Your Alcohol Intake: What Actually Works
Most people who want to drink less struggle to make it stick. Here is what the evidence shows about effective strategies and when…
Dr. Nadia Okoro
351 reading now
The Gut Microbiome: What It Is and Why It Matters
Your gut hosts around 100 trillion microorganisms, and a landmark 2018 study suggested eating 30 different plants a week supports a…
Dr. Nadia Okoro
438 reading now