Fires sparked by lithium-ion batteries—which are used to power electric bicycles—have proven to be violent, fast-moving and tough to extinguish. So far this year, the FDNY says 66 fires have been ...

Gold prices have surged over 25% in less than two months, triggering a rare blow-off top warning. The last time we saw a similar setup was in 2006—once prices peaked, gold dropped nearly 25% within a ...

Abstract: Ion electric propulsion systems have been widely used in satellite station keeping, attitude control, and orbit transfer due to their advantages of high specific impulse, good flexibility, ...