I love the idea of this service, which doesn't let you send any emails longer than 500 characters. It's a great way to focus on what's important, and to not spend all day long going through your email. I have to give this a shot myself.
Planetariums may not have crossed your mind since elementary school, but they should. At the Hayden Planetarium you can catch a show about the origins of the universe, or one of their night shows about fractals. It's magical!
The brainchild of two outstanding, universally curious journalists/authors (Stephen and Steven), this podcast is very well-written, thoughtfully curated, well produced, entertaining and fascinating. For anyone with an inquisitive, adventurous mind.
Fascinating 4 minute interview with Google engineers detailing the rigor they go through in assessing, implementing, and evaluating improvements to the core search algorithm. This robust methodology is one reason why Google continues to dominate search.