Like AI, cells change and learn from experience, while unlike computer chips they arrive naturally preprogrammed ...

Revamped definitions of scientific units are on their way. In the biggest overhaul of the international system of units (SI) since its inception in 1960, a committee is set to redefine four basic ...

Just Curious: Your everyday questions, answered What is a cell? All living things are made of cells; they are the basic unit of life. They provide structure and are the up bodies, organs and ...

The kilogram, the basic unit of mass, is now defined by a quantum quantity known as the Planck constant. That value, an immutable constant of nature, is the same everywhere in space and time.

The four units would, starting in 2019, be defined by "relationships to fundamental constants, rather than abstract or arbitrary definitions" according to Nature. The problem is one of use.

The discovery of this molecular recycling plant, detailed in a study appearing early online Sept. 19 in the journal Neuron, provides new insights into how the basic units of learning and memory ...