Doomsday, sweetness, digital postcard, aroma clock

Happy MLK Jr. Day to you! Here's a few totally unrelated links:

• Is Iran's president actually a crazy, doomsdayist?
• New tablets can make sour taste sweet. So now I can eat my Chicken McNuggets in Sweet & Sweet sauce?
• A new digital postcard for when you're willing to spend $25 on a "wish you were here".
• Now, instead of sounds, you can wake up to scents with the Aromatherapy Alarm Clock. (Or at least different scents than you normally wake up to.)
• Purdue U. designers win Microsoft competition with this cool bookshelf based PC design.
• A rollable, fabric keyboard looks like a great portable keyboard option.