A few design improvements to the LG Gram 17 make the world’s lightest 17-inch laptop an excellent choice for frequent travelers who need all the screen real estate they can get. When we reviewed the previous version of the LG Gram 17 a few months ago, its screen, battery life, and most of all its light weight impressed us, but it had significant physical design flaws that made it hard to recommend. LG has now fixed some of those problems in the latest version (model 17Z90N), with improvements to the keyboard and touchpad especially welcome. The new laptop is pricey at $1,849, but it offers some singular talents that few other 17-inch notebooks can match. The big one? Its astonishing under-3-pound weight. The 3-pound mark is the gold standard for ultraportable laptops from the likes of Apple, Dell, and Asus. Plenty of other models from a half-dozen or more manufacturers meet this mark, too. What makes the LG Gram 17 so remarkable is that it weighs just 2.98 pounds with a much larger chassis and as much as four additional inches of screen real estate. Nearly all other ultraportables come with 13.3- or 14-inch displays. Measurements confirm just how successful LG’s wei...