Here's a riddle you can take into the weekend: Which has a longer lifespan, the Arabidopsis Thaliana, a North African flowering plant, or the KIN, the latest smartphone to come from Microsoft? Give up? It's a trick question. Like a freshly sprouted Thaliana, the KIN lived for just six weeks! When we heard the Redmond, Washington-based company was going to cut its new phone's lifeline so early, we couldn