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Hazards and disasters

Radon is a silent killer. Could it be in your home?

Radon is a dangerous radioactive gas that can cause lung cancer. It has no smell, colour or taste and it can seep into your home from the ground, via water and building materials. Why is SA's government not alerting the public to the dangers and just how worried should we be? Health24 takes a closer look.

Paraffin lamps high carbon emission

The small kerosene lamps that light millions of homes in developing countries have a dark side: black carbon – fine particles of soot released into the atmosphere.

Evolution driven by environment

A series of rapid environmental changes in East Africa roughly 2 million years ago may be responsible for driving human evolution, says researchers.

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SEE: Interesting facts about hearing loss Earworms: Let it go Is it bad to sleep with earplugs all the time?

SEE: Do women hear better than men?

The reason why men often appear not to be listening could be because they actually can't hear you.

Confident smile? »

Acidic drinks can harm your kids' smiles The facts on bleaching your teeth Am I taking good care of my teeth?

Why are my teeth stained?

We know the rules – brush your teeth twice a day and floss to keep them healthy. But, have you ever wondered what causes those stains that sometimes appear?