Pregnancy may cause changes in hormones that affect the thyroid, and thyroid problems can affect a growing baby. For some women with Graves' disease, symptoms worsen in the first trimester, and then improve for the rest of the pregnancy. Symptoms often worsen again after delivery.
When was the School Bus invented? raman December 10, 2011 Comments Off on When was the School Bus invented? In 1827, George Shillibeer introduced the first school bus for Quaker school at Abney Park in Stoke Newington in the North-East of United Kingdom. It was horse-drawn and designed to carry 25 children. The rear-engine diesel-powered school bus was introduced in 1959 by Gillig Bros. Collin Bus introduced the first small school bus in 1967 and later in 1973 by the Wayne Busette. Miscellaneous Post navigation
In the US, electric trams (trolley cars) were first successfully tested in service in Richmond, Virginia, in 1888, in the Richmond Union Passenger Railway built by Frank J. Sprague.Another was by John Joseph Wright, brother of the famous mining entrepreneur Whitaker Wright, in Toronto in 1883. Welsh example of a tram was usually known as the Mumbles Train, or more formally as the Swansea and Mumbles Railway. Built as the Oystermouth Railway in 1804, on 25 March 1807 it became the first passenger-carrying railway in the world.