Time feels like the most basic feature of reality. Seconds tick, days pass and everything from planetary motion to human memory seems to unfold along a single, irreversible direction. We are born and ...

This puzzle is known as the problem of time, and it remains one of the most persistent obstacles to a unified theory of ...

Applied physicists in the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) have demonstrated a new ...

Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ideas such as energy, mass, particles and waves. Physics attempts ...

Mechanical forces influence the growth and shape of virtually every tissue and organ in our bodies. However, little is known about the mechanisms by which individual cells sense these mechanical ...