Nobody likes to wait, and we are willing to pay to avoid it. Expedited shipping, fast food and video streaming are all profitable because they reduce or eliminate that wait. You can test this by ...

Biologists say the appendix isn’t useless after all. Evolution kept reinventing it, and it may help support gut immunity and ...

The human body is a machine whose many parts—from the microscopic details of our cells to our limbs, eyes, liver and brain—have been assembled in fits and starts over the 4 billion years of our ...

Yet modern biology has revealed that cells are preternaturally sophisticated assemblages — literally automated, miniaturized factories. How could the evidence have been overwhelming but now orthodoxy ...

Add Yahoo as a preferred source to see more of our stories on Google. Most people get acquainted with their appendix when it's inflamed and about to rupture. Sebastian Kaulitzki/Science Photo Library ...