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 ...

To navigate, the brain must convert changing sensations into a map-like sense of the world, which remains stable as the body moves. A new study finds that the fly brain sometimes performs the ...

We have all been taught in school that planets revolve in the same direction as the Earth, i.e., in the counterclockwise ...

For the first time, scientists have observed a collection of particles, also known as a quasiparticle, that's massless when moving one direction but has mass in the other direction. The quasiparticle, ...

Rolling-ring drives are friction drives that convert the constant rotary motion of a plain shaft into a traversing action that moves an attached carriage. Used in positioning and reciprocating ...

This work was supported by NIH National Eye Institute Grants R01EY014645 (to I.F.) Woon Ju Park receives funding from an NIH National Eye Institute Grant K99EY034546 and was supported by a Weill ...

Mass gathering The crowd at the San Fermìn festival in Pamplona, Spain. (Courtesy: Bartolo Lab, ENS de Lyon) The team analysed high-resolution video captured from two locations above the gathering of ...