Queen ants live as long as their colonies. Which dies first the colony or the queen? T his is a tricky question since some species of ants have multiple queens. Let's consider colonies with only one queen first. It's a c…

Why do we hiccup? H iccups happen because of spasmodic contractions of our diaphragm. When our diaphragm contracts, our lungs inhale sharply. This intake of breath in the throat causes that little 'hic' sound. People hic…

How can birds fly in the dark? A lthough most birds go to roost when the sun sets, there are many species that can fly through a darkened sky- because of a variety of techniques. Owls, which hunt at night, have developed eyes th…

Did chameleons always change colour or did they develop the ability over time ? Chameleons  Most chameleon species evolved a basic camouflage colouring and pattern which blends with the land and trees they live in. Variations …

What is the speed of a falling raindrop ? It depends on the size and weight of the raindrop how fast it falls: the heavier, the faster. At sea level, a large raindrop about 5 millimeters across (house-fly size) falls at the r…