A quick reminder: How to Teach Relativity to Your Dog (cover in the left sidebar) will be released at the end of the month. If you’d like to win a signed copy early, though, you can enter our Photoshop contest. Just edit a picture of Emmy into another picture having something to do with physics. Like this:

i-03a2e85c613db83a4b8eed5e1daa8b7a-sm_sad_emmy_brian_greene.jpg

(See the transcript here for the source of this comment.)

The deadline for entering is this Friday. We’ve already got some quality entries, but the more the merrier.