Other Cool Websites

Essays
Paul Graham on Startups - founder of Y Combinator
Idle Words - Intelligent thoughts.
Derek Sivers - The comments are interesting.
Aaron Swartz - founder of Reddit. RIP.

Skiing
Open Snow - Localized snow forecasts for a given mountain
Localized Ski Area Wind Speeds - lifts close a lot for wind.

Environmental Tech
Electrek.co

Infographics
How America Uses Its Land
U.S. Wind Map

General
Good list of science and social sciences blogs from Statmodeling

Other
History of American Education - on one page
High School Graduates Tables, 1869 through future
National Parks - from Google Arts & Culture

Learn
Excel