Lake Definition and 104 Threads

http://tv.ksl.com/index.php?nid=5&sid=97513

In this glaciated upland region why is the the river or lake a green colour? Me thinks that it is obviously to do with the sediment on the bed of the lake. Perhaps it is a chalk bed or a solution lake?

Anybody else heard of this facility? Apparently some really odd stuff is happening at Lake Vostok. http://www.ldeo.columbia.edu/~mstuding/vostok.html http://www.antarctica.ac.uk/News_and_Information/Press_Releases/1998/19980317.html...

I have been rather unfortunate to attend a school with a physics department that uses Sears and Zemansky's University Physics textbook. I have been working unsuccessfully on the following problem (Chapter 15, #103 for those who have the book) for 2 days... Show that the thickness of the ice...