Every cell in the body has the same DNA, but different cell types—such as muscle or brain cells—use different parts of it.

Notice that this student used not one, not two, but eight perfectly grammatical sentences to say that their grammar is bad — so bad that it’s standing in the way of pursuing dreams in a scientific ...

The human visual system provides us with a rich and meaningful percept of the world, transforming retinal signals into visuo-semantic representations. For a model of these representations, here we ...