Biological systems must respond to internal and external variations such as the depletion of nutrients, the fluctuations in hormone levels, and the arrival of sensory signals. In response to stimuli, ...

The hydrological cycle is a fundamental natural process for keeping Earth’s operating system intact. Humanity and civilization are intimately dependent on the water cycle, but we have manipulated it ...

The ability of near-resonant light fields to modify the energetics and dynamics of an atom (or a molecule) is central to many phenomena such as laser cooling, trapping, quantum optics of atoms in a ...