Dr. Dean Ornish shares new research that shows how adopting healthy lifestyle habits can affect a person at a genetic level. For instance, he says, when you live healthier, eat better, exercise, and love more, your brain cells actually increase. And new findings show that a healthier lifestyle can turn off disease-provoking genes and turn on the good ones.
Without specialization and trade, our ancient ancestors only consumed what they could make themselves.
This 1909 10HP Blackstone oil engine was used for pumping water from a river to a market garden. The engine was sabotaged in the 1920s by someone blowing up the cylinder with explosives. A new cylinder was installed and the engine was returned to service for a number of years when it eventually fell into disuse. A number of river floodings submerged the engine and it was eventually partially buried in silt. It was recovered in the 1990s and in 1997 it was dismantled, cleaned and started again after many years of neglect. The starting procedure requires heating of the hot bulb with a blow lamp in order to vaporise the fuel ( kerosene ) and to preheat the internal combustion chamber to allow fuel ignition.
