Can you chip in? As an independent nonprofit, the Internet Archive is fighting for universal access to quality information. We build and maintain all our own systems, but we don’t charge for access, ...

Applied mathematics is the application of mathematical techniques to describe real-world systems and solve technologically relevant problems. This can include the mechanics of a moving body, the ...

Bipolar 2 includes mood swings between depression and hypomania. Depression is common in bipolar 2 and includes sadness and loss of interest. Hypomania in bipolar 2 is a less severe form of mania and ...