Fish and sea animals live in a very different environment to ours, and come in all shapes and sizes, from tiny to enormous. Fun Fish Facts Fish have been around…
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…
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…
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….
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…
Paper is used for a great many things, from paper towels and tissues through sheets of paper for printing at home or work, to special paper for banknotes, and each…
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…
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…
Plants grown from seeds, from the smallest (an orchid, at 85 micrometers long) to the largest (the Coco de Mer palm, at about 30 cm long). Seeds are amazing things…