This image from Monday shows extreme ultraviolet light that highlights the hot solar material in the sun's atmosphere. NASA/SDO hide caption
An Apple employee explains the features of the new iMac, including its Retina 5K display. Marcio Jose Sanchez/AP hide caption
Due to fears of Ebola, Excalibur, the pet of a nurse assistant infected with the virus in Madrid, was euthanized as a precautionary measure. AP hide caption
Tony Zhou's essay on the dilemma directors face integrating new technologies references this scene from the BBC TV series Sherlock, in which text messages are depicted on screen. YouTube/A Brief Look at Texting and the Internet in Film hide caption
These little robots, called BlabDroids, ask people questions and video record their replies. The footage will be used to create a documentary. Courtesy of Alexander Reben hide caption
A view of Seattle from the Bullitt Center. Brad Kahn/Flickr hide caption