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The concept of time as a way to measure the duration of events is not only deeply intuitive, it also plays an important role in our mathematical descriptions of physical systems. For instance, we define an object's speed as its displacement per a given time. But some researchers theorize that this Newtonian idea of time as an absolute quantity that flows on its own, along with the idea that time is the fourth dimension of spacetime, are incorrect. They propose to replace these concepts of time with a view that corresponds more accurately to the physical world: time as a measure of the numerical order of change.

Following months of preliminary work on computer simulations, the first completed prototype of the new electric concept car from Technische Universitaet Muenchen showed in its first driving tests that it possesses excellent driving properties -- not only in theory, but also in practice. Technische Universitaet Muenchen will be presenting its new electric vehicle concept "MUTE" at the international motor show in Frankfurt from Sept. 15-25, 2011.

The concept of the hydrogen economy (HE), in which hydrogen would replace the carbon-based fossil fuels of the twentieth century was first mooted in the 1970s. Today, HE is seen as a potential solution to the dual global crises of climate change and dwindling oil reserves. A research paper to be published in the International Journal of Sustainable Design suggests that HE is wrong and SHE has the answer in the sustainable hydrogen economy.

While most people know that the shortest distance between two points is a straight line, this concept is proving even truer in the world of stock trading. In a world where buying low and selling high means all the difference, racing the speed of light between to different financial markets can mean greater profit.

EADS is looking to release an entirely electricity powered plane by the year 2035. The plane, which has been dubbed the VoltAir, was shown off at the Paris Air Show, which took place last week. The Paris Air Show is one of the largest aviation shows in the world.