Comets, Asteroids and Meteors: What's the Difference?
Comets, asteroids, meteoroids, meteors and meteorites are easy to confuse. This guide explains what each one is, what they are made of…
Dr. Nadia Okoro
408 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
How to Reduce Food Waste at Home
Practical ways to waste less food at home: smarter planning and shopping, better storage, understanding date labels, and turning leftovers…
Dr. Nadia Okoro
463 reading now
What Is a Virus? (The Biology)
A virus is a tiny package of genetic material that can only reproduce by hijacking living cells. This guide explains what viruses are made…
Dr. Nadia Okoro
434 reading now
The Science of Coffee
How coffee works, from caffeine and the chemistry of extraction to roasts and what the evidence says about health - a clear guide to the…
Dr. Nadia Okoro
371 reading now
What Causes the Seasons?
The seasons are caused by the tilt of Earth's axis, not its distance from the Sun. This guide explains why the tilt matters, why the…
Dr. Nadia Okoro
355 reading now
How Do Rainbows Form?
A rainbow forms when sunlight is bent, split and reflected inside raindrops, spreading white light into a band of colours. This guide…
Dr. Nadia Okoro
394 reading now
What Is a Balanced Diet?
A plain-English guide to what a balanced diet means in practice, using the NHS Eatwell Guide: the food groups, rough proportions, and…
Dr. Nadia Okoro
357 reading now
Understanding Food Additives and E-Numbers
A plain-English guide to food additives and E-numbers: what they are, the main types, how they are tested for safety, and how to read them…
Dr. Nadia Okoro
445 reading now
What Is a Galaxy?
A galaxy is an enormous, gravity-bound system of stars, gas, dust and dark matter. This guide explains what galaxies are made of, the main…
Dr. Nadia Okoro
472 reading now