A model of a quantum thermal diode based on a qubit and qutrit. The asymmetric design allows this system to behave as a thermal diode when connected between two thermal baths. Credit: APL Quantum ...

Researchers from the University of Washington want to improve the pipe. Specifically, they are developing a flexible pipe with an interior helical structure that makes fluid flow one way and not the ...

One important saying I first encountered as a schoolboy was: Time and tide wait for nobody. I was reminded of it several years later when I was visiting Japan with my wife. There in Kyoto while ...

Alligators have a one-way path for breathing that is similar to birds’, new research shows. The findings, published in the Jan. 15 Science, could explain how dinosaurs’ ancestors rose to prominence.