Save
Email
Print
Share
RSSBrowse Reference Articles
81 to 90 of 484 articles
-
Natural gas
Natural gas, commonly referred to as gas, is a gaseous fossil fuel consisting primarily of methane. It is found in oil fields and natural gas fields, as well as—in smaller quantities—in ... > more -
Ozone depletion
Ozone depletion describes the observed loss of ozone in the stratosphere over the past 50 years. It encompasses both a steady thinning of the ozone layer at mid-latitudes and its catastrophic ... > more -
Ethanol fuel
The use of ethanol as a fuel for internal combustion engines, either alone or in combination with other fuels, has been given much attention mostly because of its possible environmental and long-term ... > more -
Global Positioning System
The Global Positioning System, usually called GPS, is the Earth's only fully-functional satellite navigation system. A constellation of more than two dozen GPS satellites broadcasts precise timing ... > more -
Earth's atmosphere
Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and carbon dioxide 0.04% trace ... > more -
Rachel Carson
Rachel Louise Carson (May 27, 1907 - April 14, 1964) was a Pittsburgh, Pennsylvania-born zoologist and biologist whose landmark book, Silent Spring, is often credited with having launched the global ... > more -
Carbon dioxide sink
A carbon dioxide (CO2) sink is a carbon reservoir that is increasing in size, and is the opposite of a carbon "source". The main natural sinks are the oceans and plants and other organisms that use ... > more -
Hurricanes and Cyclones
Severe Weather
Accident and Trauma
Natural Disasters
Sports Medicine
Healthy Aging
Social effects of Hurricane Katrina
The impact and aftermath of Hurricane Katrina led to one of the most severe humanitarian crises in the history of the United States. In addition to the over 1,300 fatalities caused by Katrina over ... > more -
Urban planning
Urban, city, or town planning is the discipline of land use planning which explores several aspects of the built and social environments of municipalities and communities. In the nineteenth ... > more
Search ScienceDaily
Number of stories in archives: 137,433
more 
