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Science News
April 6, 2002 |
TimeLine: April 2, 1932 Teletypewriters can now be used in home... Einstein and de Sitter return to Euclidean idea of cosmos... Cannot know universe's shape without more observations... Entire universe still young, little older than earth itself... New long-time clock is rotation of Milky Way... etc.   |
Chemistry World
September 3, 2014
Andy Extance |
Environmental priorities stymie hunt for stubborn ozone depleter The Earth's gradually healing ozone layer -- an iconic success in humanity's attempts to fix the environmental damage it causes -- is being set back by unanticipated lingering pollutants. |
AskMen.com
November 16, 2001
Chris Rovny |
The ABCs Of Dry Cleaning Today's dry-cleaning process is pretty straightforward to customers, and surprisingly enough, dry cleaning is also quite environmentally friendly... |
Science News
November 29, 2003 |
TimeLine: November 25, 1933 Steel towers go up and down to speed survey of country... Cosmic collapses held cause of birth of spiral nebulae... Long-known chemical found to be most versatile solvent... |
