Bacteria and viruses are often confused with each other, but they are very different. Bacteria are usually harmless and viruses are usually harmful, though there are bad bacteria and useful…
Warm air is less dense than cold air, and so as air is warmed by the sun it rises (see ‘Warm and Cold: Expanding Air’ and ‘Floating and Sinking: Looking…
Fungi (singular is ‘fungus’) are not plants or animals but are in a separate kingdom. Fungi Facts Mushrooms are the fruit of some kinds of fungi – the rest of…
Cooking with the sun (solar cooking) provides free, safe, clean heat energy that preserves nutrients in food. Cooking with the Sun On a clear, bright, sunny day, line a mixing…
Maths can’t really reveal the secret of telepathy (reading people’s minds), but some clever maths tricks make it seem like it is possible. Some of these will need a calculator….
Science has got itself a really bad name. Some people are afraid of science, and think of scientists as people who ‘play God’. Other people think that science is something…
Soil erosion is the loss of healthy and fertile topsoil through water or wind, leaving behind poorer quality subsoil. Soil erosion can lead to famine in developing countries, because the…
Knot theory is the study of knots. As well as being useful to hold things together, knots and knot theory are important in different areas of science, including biology and…
Traditionally, science – particularly chemistry and physics, as well as maths, computing and technology – has been a male-dominated area. Girls may not be interested in science as a study…
