1 Vertical-cumulus, cumulonimbus. 2  A cloud that forms on the ground is called fog. 3  Some clouds you see in the sky might be from airplanes. 4  These are called contrails. 5  High level cirrus clouds may travel at speeds up to 100 mph. 6  Even though clouds float in the air, a single cumulus cloud can weigh hundreds of tons.
1 It costs an average of about $47,000 per year to incarcerate an inmate in prison in California. 2  Over two-thirds of these costs are for security and inmate health care. 3  Since 2000-01, the average annual cost has increased by about $19,500.
Operating costs averaged $22650 ($65/day) per inmate in fiscal year 2001 according to this report. It has much more info, tables by state and comparisons to amounts spent on health care, etc. Cost of incarcerating a US prisoner in secure custody in. 2003-4 was about $28 000 (Â£15 800).