Search Results for: antarctica
Skip to results
1,403 results
1,403 results for: antarctica
- Humans
Whys Up
The University of Wisconsin created the “The Why Files” to explain the science behind news headlines. The stories are timely and written for a broad audience of children and adults. Recent topics include snowmobile use in national parks, tsunamis, climate change, and ice in Antarctica. The articles are classified according to educational standards for grades […]
-
Letters
Plan for a long stay Lawrence Krauss’ idea of staying permanently on Mars (SN: 10/10/09, p.4) is fascinating, but criticism by John F. Fay and Jeffry Mueller (Feedback, SN: 11/21/09 p.29) missed important information. Krauss too missed the best of all scientific comparisons. Regarding the travel to the American continent by the Pilgrims: the “capital […]
-
Freon: Destroying the ozone layer?
Scientists discovered in the 1970s that chlorofluorocarbons such as Freon were hurting Earth’s ozone layer.
-
Letters
Dark matter inspiration On reading Tom Siegfried’s editorial “Dark matter nothing to fear, if it’s there or not” (SN: 5/19/12, p. 2):As into the universe I did stare I met a particle that wasn’t there It wasn’t there again today Oh, I wish it would go away.Tom Derderian, Winthrop, Mass. Reality bits Regarding “Bits of […]
- Earth
Ozone hole might not recover until the year 2065
The ozone-free zone that develops high in the atmosphere over Antarctica each summer as the result of the presence of chlorine- and bromine-containing chemicals may not heal until 15 years later than previously projected.
- Earth
Satellite makes finest map yet of Antarctica
Using data gathered by a satellite launched almost 3 years ago, scientists have assembled the most comprehensive high-resolution map of Antarctica that's ever been made.
-
-
Letters to the editor
Invertebrate enigmas I found the recent article “Evolutionary enigmas” (SN: 5/18/13, p. 20) fascinating because I know of another example of an invertebrate animal possessing a “strictly vertebrate” quality. As a high school human anatomy and physiology teacher, I sometimes have my students test the effects of the constituents in cigarette smoke on live Daphnia […]
-
- Life
Penguin DNA evolving faster than thought
Comparing the DNA in modern birds to that in ancient generations shows molecular evolution happens at varying rates, and that each species has its own rate of evolution.
- Paleontology
Major eruption cooled the climate but went unnoticed
Ice-core records suggest that a major 1809 eruption cooled Earth even before the Tambora eruption and ‘the year without a summer’.
- Climate
Acidifying ocean may stifle phytoplankton
Chemical changes in seawater make a key nutrient less available to these organisms.
