ISSN:
1476-4687
Source:
Nature Archives 1869 - 2009
Topics:
Biology
,
Chemistry and Pharmacology
,
Medicine
,
Natural Sciences in General
,
Physics
Notes:
[Auszug] A likely mechanism for warming the early Earth was the presence of one or more greenhouse gases in the --atmosphere in addition to water vapour. Sagan and Mllen3suggested that ammonia could have provided the necessary heating if present in concentrations of a few parts per million. However, even ...
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1038/301053a0