This cat was born looking permanently unimpressed. Thanks to some wild fur markings, this cat appears to have thick eyebrows ...

Molecular motors are complex devices composed of many different parts that consume energy to perform various cellular activities. In short, molecular machines transform energy into useful work.

The Trump administration pulled the plug on IRS Direct File, a pilot program allowing taxpayers to file federal tax returns for free. But there are still many no-cost filing options available, ...