Bevel gears are gears designed to transmit motion between intersecting axes. Perpendicular arrangements are most common, but bevel gears can be manufactured for nearly any angle. The teeth bearing ...

The Earth's plates jostle about in fits and starts that are punctuated with earthquakes and volcanic eruptions. 4 min read There are a few handfuls of major plates and dozens of smaller ...

Plate boundaries are where the action is. A large fraction of all earthquakes, volcanic eruptions, and mountain building occurs at plate boundaries. It is also where most of the people on Earth live.

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Quantum mechanics? Something to do with genetics, perhaps? One discovery that ought to be on everyone's rundown is plate tectonics - the description of how the rigid outer shell of our planet (its ...

With America's 250th birthday just under two years away, the state of Pennsylvania has decided to start the party early, unveiling a new license plate design to honor the birthplace of "our ...

The current license plate design dates back to 2005, though several tweaks have been made since. The 2005 design is itself a variation of the one rolled out in 2000, which was the first in the ...

Sixteen months after longtime Philly Mag writer Christine Speer Lejeune wondered why Pennsylvania couldn’t have a better license plate design, we can officially shout it from the rooftops ...

Hydrothermal vents can be found around the world at the junctions of drifting tectonic plates. But there are many hydrothermal fields still to be discovered. During a 2022 expedition of the MARIA S.