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.
That means each U.S. resident is paying about $260 per year on corrections, up from $77 per person in 1980, thanks to the country's annual $80 billion price tag for incarceration, according to a new report from The Hamilton Project, which is part of Washington, D.C., think tank The Brookings Institution.he surge in spending poses a number of questions about the country's system of incarceration, especially given that the overall rate for violent and property crimes has actually declined 45 percent during the past two decades.