Cashless parking

Vacant parking spaces in town are thin on the ground. Finding one is just as tiresome as making sure you have the right change for the parking machine. An adhesive microchip on the windshield will make things much easier ...

Voltage loss in electrically conductive bacteria

An international research group has shed new light on cable bacteria. Using laser light, researchers have followed electrons as they travel through the current-conducting bacteria, and on the basis of the electrical potential ...

How much open space does an urban area need?

Around 97% of all metropolitan areas in the United States have insufficient open space, according to a new study published in the Journal of the Association of Environmental and Resource Economists. In the paper "Open Space ...

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