Roman central heating worked slightly differently, but the goal was the same. A ground level furnace was used to create hot air which circulated beneath a thin floor raised up on pillars of tiles â this system was called a hypocaust. Not only was this central heating, it was underfloor heating! Smoke and fumes from the furnace were channelled off via flues so as not to pollute the heated space above. The same method was used to heat the waters in bath houses (yes, the Romans gave us hot baths too). Concrete. Opus caementicium (Roman concrete) was made from quicklime, pozzolana and an aggregate of pumice.
WHAT THEY MEAN: The most recent Census count (which dates to 2008) found the 227 million Americans above the age of five speaking only English at home. Another 55 million spoke 379 other languages.
The American people are remarkably united about making English our nation's official language. Depending on the poll, up to 98 percent of all Americans endorse official English. That majority support includes immigrants and native-born, Anglo and Hispanic, European and Asian.People all over the world know that English is the language of opportunity not only in America but increasingly the world.Students rioted in Cambodia recently for the chance to learn English.The French government has complained of too much English on the Internet.epending on the poll, up to 98 percent of all Americans endorse official English. That majority support includes immigrants and native-born, Anglo and Hispanic, European and Asian. People all over the world know that English is the language of opportunity not only in America but increasingly the world.