From what we know, liquid water is required to sustain life
From what I know, cable TV and Cheetos are required to sustain life.
But VMWare Server's 'boot guest OS on host OS startup' and being able to close the virtual machines window and have the OS continue running (i.e. run it in the background with no GUI) are great features that are missing in VirtualBox.
VBoxHeadless startvm "Ubuntu 8.10 Desktop"
For automatic startup on a Linux host, you can use @reboot in cron tab or add a line to
Here's the catch: the string is actually knotted at intervals of 110 cm. So all the fudgers who get a result of 9.8 +/- 0.5 ms^-2 because they knew that was the 'right' answer get to fail, while those who got ~9 ms^-2 get full marks.
Unless someone is thorough enough to actually measure the distance between the knots.
The four-square-mile fossil forest — the largest find ever — is just south of Danville in Vermilion County, Ill., in the 300-million-year-old Herrin coal bed, a 6-foot-thick strip mined by a subsidiary of St. Louis-based Peabody Coal.
No photos; but a graphic about how they believe it happened.