TimesMachine is an exclusive benefit for home delivery and digital subscribers. Full text is unavailable for this digitized archive article. Subscribers may view the full text of this article in ...

PERMAFROST has been shown by many authors to have existed in various parts of England during the last glacial period 1,2. Its full extent and distribution have remained somewhat uncertain but can ...

Sea levels fall and rise with each period of freezing and thawing. Some mammals get massive, grow furry coats, and then disappear. Humans evolve to their modern form, traipse around the globe ...