Facebook napkins holder - "I like NY"

6/29/2015 went on NYC Linux meetup @ Facebook. Here is FB napkins holder

Chicago Manual of Style

Chicago Manual of Style

Empire of Cotton by Sven Beckert

The New York Times print plant tour (College Point)

Comet 67P

Source: http://www.esa.int/spaceinimages/Images/2015/04/Comet_activity_31_January_25_March_2015

Astronautics

Astronautics - (alternatively cosmonautics) is the theory and practice of navigation beyond Earth's atmosphere. http://en.wikipedia.org/wiki/Astronautics

Nanoflares

Mac keyboard symbols

Total Eclipse

Umbra - The umbra (Latin for "shadow") is the innermost and darkest part of a shadow, where the light source is completely blocked by the occluding body
Penumbra - The penumbra (from the Latin paene "almost, nearly" and umbra "shadow") is the region in which only a portion of the light source is obscured by the occluding body.

Source: http://en.wikipedia.org/wiki/Umbra,_penumbra_and_antumbra

ACK and AG

Alternatives for grep -> ack and ag (much faster)
http://blog.newrelic.com/2015/01/28/grep-ack-ag/

It works on Linux and MAC. Use brew to install on MAC:
brew install ack
brew install ag