Our smartphones and other gadgets are powered by lithium-ion batteries, but as companies like Samsung know all too well, those charge-holders can be flammable under the wrong conditions. The hazards of lithium-ion batteries are also a concern for another group, one with a strong incentive to keep fires at bay: the U.S. Navy. Now chemists at the U.S. Naval Research Laboratory (NLR) have announced a new battery technology that they say is both safe and rechargeable, and could make its way into electric vehicles, bikes, or ships.
Church pews nationwide were lit up this Easter weekend, and not just by the glow of so many churchgoers making their once-a-year appearances - iPads and smartphones were on plenty of parishioners' laps, helping people follow along with the ceremonies. Congregants are feeling increasingly comfortable with using gadgets in church, and priests and ministers are condoning it.
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