Long-awaited Facebook IPO looms in New Year

Facebook co-founder and chief executive Mark Zuckerberg has deflected talk of going public for years but it looks like it is finally going to happen in 2012.

A four-stroke engine for atoms

If you switch a bit in the memory of a computer and then switch it back again, you have restored the original state. There are only two states that can be called "0 and 1."

How low can Facebook go?

Two weeks after the largest, most anticipated IPO in years, Facebook shares keep going down. And down. And down. And investors want to know how far they can go.

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