Nature

Two-dimensional materials articles from across Nature Portfolio

Two-dimensional materials are substances with a thickness of a few nanometres or less. Electrons in these materials are free to move in the two-dimensional plane, but their restricted motion in the ...
Mirage News

NASA's CASALS Fills Gaps in 3D Earth Maps

Explore This SectionOverviewTechnology ProgramsTechnology HighlightsWorkshops and EventsPublications From orbit, today's ...

[JavaScript Learning] 27 questions at GAS Sky Castle. Two-dimensional arrays, return, and missing save data

Continuing my JavaScript learning and the conquest of GAS Sky Castle. October 18, 2026. Today I progressed from Q24 to Q50.

[JavaScript Learning] Why doesn't return stop the process in forEach? A story about choosing the wrong 'place to return' in the Sky Castle

I am continuing my JavaScript learning and my quest through the GAS Sky Castle.In today's adventure, I encountered a spell I ...
PNAS

Two-dimensional billiards are Turing complete

Billiards are a textbook model of deterministic motion: A particle moves freely and reflects specularly from rigid walls. We show that, even in two dimensions, billiard trajectories can simulate ...