On May 20, 1875, delegates from a group of 17 countries gathered in Paris to sign what may be the most overlooked yet ...

A radical initiative for its time, the Metre Convention ultimately birthed a system of measurement that would transcend ...

A mysterious menagerie of quantum states — once purely theoretical — has been brought to life by researchers at Columbia ...

Amazingly, compassion — because it fosters positive feelings — actually attenuates the empathetic distress that can cause ...

Just last summer, Yiping Wang, Max-Planck NYC Center Postdoctoral Fellow ... and then a second detects the change in dielectric constant, a measure of the strength of electrical interactions ...

The 1990s delivered a surprise to astronomers: the universe wasn't just expanding—it was speeding up. This late-time ...

In quantum mechanics, however, it becomes meaningless to talk about distances smaller than a limit called the Planck length ... that make sense of a world in constant transformation.