Why is the Sky Blue?
It's one of the first questions children ask and one of the last that adults can actually answer. The sky is blue because of a phenomenon called Rayleigh scattering — and it explains sunsets too.
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Science
Science
Vaccines, batteries, the colour of the sky — everyday science, explained clearly.
3 articles
How Batteries Work
From the AA in your TV remote to the 100 kWh pack under your EV, all batteries use the same fundamental trick: controlled chemistry. Here's the electrochemistry explained.
How Vaccines Work
Vaccines don't just prevent disease — they train your immune system to win battles before they start. Here's the immunology of how they work, from antigens to antibodies.