Marxists Internet Archive
Marxists.org: "Existence and Being" by Martin Heidegger
One of Heidegger's works that is "easier" to read. Does require some background information, but a good way to introduce one's self to Heidegger and his peculiar writing style.
Other
The Case of Martin Heidegger, Part Three
The third and final part of this excellent series on Heidegger's Nazi involvement.
Friesian School
Friesian: Baruch Spinoza by Kelley L. Ross
Contains biographical information, and an excellent overview of key philosophical themes and ideas. Also traces Spinoza's influence on modern philosophy and later.
TED Talks
Ted: Ted Ed: How Do You Know You Exist?
How do you know you're real? James Zucker investigates this in this mind-boggling tribute to Rene Descartes's Meditations on First Philosophy. [3:02]
Environduck
Enviroduck: Carbon Footprint Calculate Your Co2 Generation
Go green when you use carbon footprint calculator to figure CO2 and how to lower it.
Environduck
Enviroduck: Driving Techniques to Conserve Gas
Learn ways to conserve gas by driving and maintaining your car and tires.