This Is How Your Brain Works?

Everything happening around you is dictated by the way your brain processes information. Or more precisely, the difference between fast thinking and slow thinking. This video explains how our brain works at two speeds. Fast processing happens instantly — it’s how we recognize faces or read body language. Slow processing, as the name implies, takes…

Why does a Chameleon change colours?

You know Chameleons change their colour depending on the objects they sit on but there’s one more reason why this happens! Scientists believe that chameleons change colour to reflect their moods. By doing so, they send social signals to other chameleons. For many years, scientists believed that chameleons change their colour by manipulating specialized cells — called chromatophores — that contain…

Types of Rocks

Hey kids! What strikes your mind when you hear the word rock? Is that ‘rock music?’ Well not anymore! It’s the first thing you learn in a geology class – very briefly the three types of rocks are Igneous; they form from the cooling of magma deep inside the earth. Metamorphic; they are formed through the change…

Why are manhole covers circular?

Why are most manhole covers round? Sure it makes them easy to roll and slide into place in any alignment. But there’s another, more compelling reason, involving a peculiar geometric property of circles and other shapes. But there’s actually a cool geometry reason behind the design. Circle-shaped things can’t fall through a hole shaped like themselves,…

How are tennis balls made?

Today’s tennis balls are made of a hollow, two-piece rubber shell filled with pressurized gas. The rubber shell is covered with felt made from nylon or wool. The International Tennis Federation states that tennis balls should be between 2 1/2 and 2 5/8 inches in diameter and weigh between 2 and 2 1/16 oz. The factory uses a design that hasn’t changed much…

Why do hurricanes have names?

The short answer is this – it’s a whole lot easier and less confusing to name these big hurricanes. Hurricanes are given names so that meteorologists can identify them and track them across the oceans. Since there are sometimes multiple hurricanes at a particular time, naming them helps to avoid confusion. Hurricane Katrina is a recent example of such a destructive…

Hurricane vs Cyclone vs Typhoon

What’s the difference between a hurricane, a typhoon, and a cyclone? They’re all just different names for the same thing. In the Atlantic Ocean and the Northeast Pacific – basically, the waters surrounding the United States – we call them hurricanes. In the Northwest Pacific near Asia – it’s a typhoon. In the South Pacific…