Earth is the third planet from the Sun and is the largest of the terrestrial planets in the Solar System in diameter, mass and density. It is also referred to as the Earth, Planet Earth, the World, and Terra. Home to millions of species, including humans, Earth is the only place in the universe where life is known to exist. Scientific evidence indicates that the planet formed 4.54 billion years ago, and life appeared on its surface within a billion years. Since then, Earth's biosphere has significantly altered the atmosphere and other abiotic conditions on the planet, enabling the proliferation of aerobic organisms as well as the formation of the ozone layer which, together with Earth's magnetic field, blocks harmful radiation, permitting life on land. Earth's outer surface is divided into several rigid segments, or tectonic plates, that gradually migrate across the surface over periods of many millions of years. About 71% of the surface is covered with salt-water oceans, the remainder consisting of continents and islands; liquid water, necessary for all known life, is not known to exist on any other planet's surface. Earth's interior remains active, with a thick layer of relatively solid mantle, a liquid outer core that generates a magnetic field, and a solid iron inner core.Wikipedia
The World Factbook - or CIA Factbook - is a great source of information. You can find these information about every country on this place. Intelligence Factbook produced semiannually until 1980. Country entries include sections on Land, Water, People, Government, Economy, Communications, and Defense Forces. In 1981 publication becomes an annual product and is renamed The World Factbook. A total of 165 nations are covered on 225 pages.
There are news every year. For example in 2008 in the Geography category, two fields focus on the increasingly vital resource of water.CIA The World Factbook