One could argue that social networking, at least at its core level, is a healthy activity: it contains human interaction, thoughtfulness and even a splash of compassion.
Coffee contains many biologically active compounds, including caffeine and phenolic acids, that have potent antioxidant activity and can affect glucose metabolism and sex hormone levels.
Just one square inch, the chip contains 2, 056 microvalves that can selectively mix reagents together (in this case to test for the activity of a particular enzyme in a bacterium) in 256 reaction chambers, each one holding less than one-billionth of a liter of fluorescent dye.