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...simple introduction to wavelengths and looks back to the discovery of electromagnetism and the invention of radio. To demonstrate just how vital waves are, the two captains turn off their modern communication tools and try traditional methods of keeping in touch. In addition, two bonus video tracks explore Newton's laws of motion and Einstein’s special theory of...

...simple cooking analogy to help explain genetic mutations and their potential consequences in the body. While some genetic changes have little or no effect, others can cause problems with a person’s health and development. This is known as a genetic disorder. However, while our genes determine a lot about our characteristics, it is important to remember that our...

...simple: chimpanzees have culture. Are animals born cultured? This discovery started the “culture wars”, largely between animal behaviourists and anthropologists, a debate which raised the question of when we could talk about cultural variations in animal behaviour. A scientific approach is to make predictions we can challenge with experiments and observations. For...

...simple, and high production rates are achieved using carousels and automation. Energy requirement is about half that of conventional sand casting. Steel castings have been shown to be 15–20% cheaper than comparable sand castings. Cost of gravity die castings is comparable with other casting processes (see diagram). Typical products include cylinder heads, wheel hubs and...

...simple but this is not very satisfactory or sustainable as it represents a waste of a potential resource. A slightly better option is to burn the plastic within a refuse-derived-fuel to recover the energy trapped within the materials, this is often the best option for highly contaminated plastics. A better solution to waste plastics, if simple reuse isn’t practical, is...

...simple answer is: Yes!...This content is associated with The Open University's Science courses and qualifications. [Time travel, laser lights] In Doctor Who, our hero regularly travels forwards and backwards in time, visiting any epoch, anywhere in the Universe, thanks to his time machine the TARDIS (Time And Relative Dimensions In Space). But is time travel really...

...simple, it would seem, yet it is not. Some of the most popular food items hide some bedazzling science but worry not: we are here to unveil their secrets. Loathe Brussel sprouts? Blame your genes [Sprouts in a bowl] Every single cell in your body contains very important information written in the form of genes. Genes are made up of DNA, and they are passed on from our...