National Geographic: Two brothers, Levi and Corban Tillemann-Dick of IRIS Engines Inc, are carrying on their father’s dream of designing a smaller, lighter, and more efficient automobile engine. Unlike the traditional internal combustion engine, which drives pistons, their award-winning Internally Radiating Impulse Structure drives flanges that open and close like the iris of an eye. Compared with pistons, the flanges have a larger working surface area, which increases efficiency while reducing waste heat.
The finding that the Saturnian moon may host layers of icy slush instead of a global ocean could change how planetary scientists think about other icy moons as well.
Modeling the shapes of tree branches, neurons, and blood vessels is a thorny problem, but researchers have just discovered that much of the math has already been done.
January 29, 2026 12:52 PM
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