Maiden flight for world's largest aircraft. New sensor detects water contamination in real time. Currently, if you want to check water supplies for the presence of toxic bacteria, you have to take a water sample and then culture it in a lab over several days. In the meantime, it's impossible to say if the water source is safe to use. A group of students from the Technical University of Denmark, however, have created a sensor that they say can detect bacteria in water instantly, on the spot.
The optimal time for reconstruction and clean-ups is after the war, when people are returning to war-damaged areas and can be involved in the process. The best time to plan, however, is during the war so that the nation is ready to rebuild as soon as the war is over.
Reconstruction was the period following the Civil War in which the national government attempted to reintegrate the Southern states that had formed the Confederacy back into the United States.From 1865, when the war ended, until 1877, the national government worked to establish order in the South.ncensed over the Black Codes, Congress began its own Reconstruction in 1866. The Fourteenth Amendment, ratified on July 9, 1868, was an essential part of this period. This Amendment made anyone born in the United States a citizen of the nation and his state.