Ferrofluid is a very interesting material originally developed by NASA it has now found itself been used for a whole range of devices including dampers for controlling and stabilizing large building that move around in the wind. It is amazing...
"You need three things to create a successful startup: to start with good people, to make something customers actually want, and to spend as little money as possible."
Darwin is the Unix-derived core that provides the underlying foundation for Mac OS X. At Darwin's heart is the XNU kernel--a Mach 3.0-based microkernel that has been modified to include portions of FreeBSD for performance reasons.