According to the chemists, soap is basically animal fat or lard with a bit of acid and a few colours and some scents chucked in. But the answer to the "white bubble" question lies in physics.

Japanese researchers have succeeded in fertilising pear trees using pollen carried on the thin film of a soap bubble. They've been searching for alternative approaches to pollination, because of ...

1. Mix all the ingredients together. 2. Soak your hand in the bubble mixture. 3. Curl your fingers to make an O shape. Soap bubbles are hollow balls of soapy water filled with air. A thin wall of ...