On the afternoon of July 4, as Americans were celebrating the country's independence with elaborate fireworks displays, a prisoner named Joseph Martire passed out in his cell in Texas, amid the excessive heat that has been swamping much of the southern United States in recent days.Asked what the heat in the cells is like, Amite Dominick of the NGO Advocates for Texas Community Prisons replied: "The fastest way I can explain that is, go sit in your car on a triple-digit day.