A range of quirky, science-based questions children might ask are answered in a book to stimulate primary pupils' interest in science.
How Loud Can You Burp?, published this month, is by Glenn Murphy, who works at the Science Museum in London.
The book examines whether, for example, it will ever be possible to teleport from one place to another, Star Trek-style. In fact, teleportation is already possible, but so far has only been carried out successfully on light, rather than solid matter.
It also looks at what causes hiccups and how to stop them. Mr Murphy lists a range of solutions, from holding your breath to "digital rectal massage".
Other conundrums include the origin of clouds, the purpose of sleep and the difference between a brain and a computer.
Kathryn Thomson, of the Association of Science Education, believes burps could be welcome additions in science lessons. "Schools can capture children's imagination by making science relevant and slightly disgusting," she said.