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(PhysOrg.com) -- The technological world of the 21st century owes a tremendous amount to advances in electrical engineering, specifically, the ability to finely control the flow of electrical charges using increasingly small and complicated circuits. And while those electrical advances continue to race ahead, researchers at the University of Pennsylvania are pushing circuitry forward in a different way, by replacing electricity with light.

This Valentine's Day, Scientific American traces the flow of chemicals in the brain during different phases of romance and describes surprising insights from the science of attraction.

Using one of the most sensitive neutrino detectors on the planet, an international team including physicists Laura Cadonati and Andrea Pocar at the University of Massachusetts Amherst are now measuring the flow of solar neutrinos reaching earth more precisely than ever before. The detector probes matter at the most fundamental level and provides a powerful tool for directly observing the sun's composition.

The oil and gas business never changes! You get oil out of the ground, turn it into gas and put it in your car. Nothing ever changes, right?

Snakes are misunderstood. They’re not slimy.