In 1950, about 15% of the Earth's land surface was covered by rainforest. In fewer than fifty years, more than half of the world's tropical rainforests have fallen victim to fire and the chain saw, and the rate of destruction is still accelerating.
The Big Mac was first introduced in 1967 by Jim Delligatti, a McDonaldâs franchisee from Pennsylvania, and the following year was available nationwide. McDonaldâs is continuously testing and innovating to meet its customersâ needs.
Mac OS, operating system (OS) developed by the American computer company Apple Inc. The OS was introduced in 1984 to run the companyâs Macintosh line of personal computers (PCs). The Macintosh heralded the era of graphical user interface (GUI) systems, and it inspired Microsoft Corporation to develop its own GUI, the Windows OS.