The Water Planet: Origin of Life on Earth
There is no definitive evidence that proves beyond a doubt where water originated. But wherever it came from, water did eventually cover more than two-thirds of Earth's surface. The implications of this for the formation..
The Water Planet: Origin of the Solar System
Several billion years following the "Big Bang," a cloud of dust and gas began to condense and rotate, taking on a spherical shape. Eventually, the dust grains within this rotating cloud would coalesce and become the sun ..
The Water Planet: Water: Earth's Distinguishing Characteristic
The third planet out from the sun, Earth is unique in many ways. But perhaps the most significant is that seventy percent of Earth's surface is covered with water.
Treasure Trove: Commercial Uses of Sediment
Marine sediments are enormously important economically. Gravel and sand are obtained from the ocean for use as construction materials. In addition to offshore diamond deposits, tin and titanium are found in the ocean. Oi..
Treasure Trove: Fishery Management
As concerns about overfishing increase, the need for effective fishery management becomes critical. The focus is on maintaining a sustainable harvest of resources. There are a number of factors that complicate that proce..
Treasure Trove: Fishing and Regulatory Agencies
In recent years, the relationship between fishermen and regulatory agencies has grown strained as the government agencies have had to impose increasingly strict rules and regulations.
Treasure Trove: Kelp: Its Varied Uses
Kelp is the common term for a group of brown seaweeds that have significant economic value and are used in a number of ways. They can be found in a variety of products, from ice cream to salad dressings and from shaving ..
Treasure Trove: Marine Resources and Pharmaceutical Products
Among the most intriguing of all marine resources are those that have potential pharmaceutical applications. While there are significant challenges involved in harvesting marine resources for medical use, the potential f..
Treasure Trove: Marine Sanctuaries
In large part to counter problems caused by overfishing, marine sanctuaries have been established at various points along United States coastlines. The concept behind these marine protected areas is much like that of a n..
Treasure Trove: Technology and Over-Fishing
Recent advances in fishing technology have brought about major changes in the way fishes are removed from the ocean. Improved trawls, dredges and baits have greatly advanced the efficiency of the fishing process. Unfortu..