Nombre del autor:Leon S

Ekely/Getty Images It’s easy to take batteries for granted. You likely have a pack or two lying around that you don’t think twice about until something loses its juice and needs its batteries replaced.  But if you use batteries regularly to power devices or are simply an energy-conscious individual, you may have wondered if there’s

Win Mcnamee/Getty Images This morning, the famous Francis Scott Key Bridge of Baltimore, Maryland, collapsed after a head-on collision with a large container ship, sending several passenger vehicles on the bridge flying into the large river below. Wes Moore, the Governor of Maryland, has already deployed emergency resources to handle the aftermath of the incident,

At a casual glance, a chainsaw doesn’t seem like something that would be especially complicated. You turn it on, the chains spin, and it cuts stuff; it’s not rocket science. However, underneath that simple concept lies a surprisingly mechanically complex tool. A chainsaw needs to be able to not just spin at powerful, consistent speeds,