7 Best Christmas Tree Stands in 2022

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Believe it or not, a Christmas tree won't stay upright on its own. Instead, you need a stable Christmas tree stand that can accommodate the type and size of tree you have. We researched dozens of the best Christmas tree stands to help you find the right one for your needs, whether you have a real tree, an artificial tree, a small tree, or a behemoth. The stands in our guide have a track record of durability, performance, and easy setup. We also outline the size and type of tree each stand is meant for. Check out our guide to the best Christmas tree skirts once you've chosen the right stand for your tree. The best Christmas tree stands in 2022 Best Christmas tree stand overall: Krinner Tree Genie Christmas Tree Stand, available at Amazon, $82.79 The German-engineered Krinner Tree Genie Christmas Tree Stand is easy to set up in a couple of minutes and keeps trees up to 12 f...
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Prosthetic leg can 'change gears' to make going up stairs easier

A robotic leg with a big toe and motors that can "change gear" like a bicycle can enable a wearer to walk up stairs and slopes

Technology 23 November 2022

By Matthew Sparkes

Photos of an amputee subject using the powered leg

The Utah Bionic Leg uses mechanical levers to enable people to go up stairs

HGN Lab for Bionic Engineering at the University of Utah

A robotic leg with motors that work like bike gears could let a wearer walk up stairs – which many people find impossible with unpowered prostheses.

Most prostheses have no motors to actively assist walking, but instead are either passive or help only by altering the resistance of a joint’s swing, controlled by a low-power microchip. The few actively powered prostheses on the market are relatively heavy and bulky, with short battery lives, and have achieved limited success. …

https://www.tausiinsider.com/prosthetic-leg-can-change-gears-to-make-going-up-stairs-easier/?feed_id=333025&_unique_id=64729d486da12

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