Terrestrial planet Terrestrial planet A terrestrial planet, telluric planet, or rocky planet is a planet that is composed primarily of silicate rocks or metals. Within the Solar System, the terrestrial planets are the inner planets closest to the Sun, i.e. Mercury, Venus, Earth, and Mars. The terms "terrestrial planet" and "telluric planet" are derived from Latin words for Earth ("Terra" and "Tellus"), as these planets are, in terms of structure, "Earth-like". Terrestrial planets have a solid planetary surface, making them substantially different from the larger giant planets, which are composed mostly of some combination of hydrogen, helium, and water existing in various
The Greening of Planet Earth The Greening of Planet Earth The Greening of Planet Earth is a half-hour-long video produced by the coal industry, which argues that rising CO2 levels will be beneficial to agriculture, and that policies intending to reduce CO levels are therefore misguided. The video argues that rising CO levels both directly stimulate plant growth and, as a result of their warming properties, cause winter temperatures to rise, thereby indirectly stimulating plant growth. It was produced in 1991 and released the following year. A sequel, entitled, "The Greening of Planet Earth Continues", was released in 1998. The video was narrated by Sherwood