At today’s Macworld Keynote presentation given by Apple guru Steve Jobs, the Cupertino, California company announced the MacBook Air, a breakthrough in the world of laptop computing. Thinner and more powerful than the Sony Vaio TZ series, these tiny wonders fit comfortably within a manila envelope, yet still manages to incorporate a 13.3-inch display, full-size keyboard, iSight (built-in camera) and an 80GB 1.8-inch hard drive — the same ones the iPods use. By the looks of things at the keynote, this Core 2 Duo machine is about as thin as a pencil. Additional specs include – 5 hour battery life, 3 lbs, 0.16-inch thickness at its thinnest point, 0.76-inch maximum thickness, 2GB RAM, 802.11n standard Bluetooth, and multi-touch gestures for the trackpad. Price: $1,799. This machine definitely marks a precedent for the miniaturazation of notebooks. Apple, you’ve done it again! Shipping in two weeks.