
Original Nintendo DS handhelds from late 2004 keep showing up in repair piles with hinges that snap and shells that powder at the slightest pressure. Owners who stored one in a drawer for two decades often discover the damage only when they try to swap a dead screen or tighten a loose screw. Metallic paint Nintendo laid over the ABS plastic appears to be reacting with the case itself. Yellow or greenish stains leak out around edges, button wells, and hinge roots. Force the clamshell open and the plastic flakes instead of flexing.

HopTo’s first machine, Hop-1, looks like a small quadcopter that grew a pogo stick. That extra leg is the whole argument. Continuous flight means the motors fight gravity every second the machine is aloft. Hop-1 spends most of its trip bouncing on a passive spring, so the rotors only top up energy lost on each landing and fully take over when a gap, a wall, or a sudden climb actually requires flight. HopTo puts hopping energy use at about a quarter of continuous flight. Stay on the ground as much as possible, and only fly when you have to.

Standard drones start sliding on ice after a slope of only nine degrees. Gravity presses less of the aircraft into the surface as the angle rises, so a 60-degree wall leaves just half the usual downward force. Ice Dart, a 2.65-kilogram carbon-fiber quadrotor from Université de Sherbrooke in Quebec, now perches on ice that steep and stays put.

Sony Pictures Television switched on Live TV on PS5 for United States players on August 31, handing anyone with a console and a PlayStation account more than 100 live feeds plus on-demand movies and series at no extra monthly fee. Ads pay the bill. No separate download sits in the way, and PlayStation Plus is not required.

North Face priced the Vault Everyday Laptop Backpack in the mid-range ($52.50 [was $70]), and still packed it with the FlexVent harness, a padded 15-inch laptop sleeve, and a frame that lets the bag sit upright on a table or floor. Measuring 11 inches wide, 8.5 inches deep, and 18 inches tall, the 27-liter pack weighs 1 pound 11 ounces and uses 600-denier recycled polyester with a non-PFC water-repellent coating. Two webbing grab handles sit on top so you can lift it without the bag swinging into your hip. A sternum strap slides on a rail for height adjustment, and daisy-chain loops run down the front for clipping extra gear.