I’M OFTEN ASKED WHY AFRICA MATTERS. It’s an understandable question in a world of real responsibilities, real demands, and ...

Then a woman clipped my shoulder and loudly exclaimed, “Excuse you! Can’t you see we’re walking here?!” Her group turned to ...

DEAR MISS MANNERS: I live in downtown Houston and regularly walk through the underground network of tunnels to escape the ...

Watching a concert or a sports event alongside thousands of other people can be both exhilarating and dangerous, and researchers now have new theories about how people behave when they get too close ...

Matteo Bruno and his colleagues at the Sony Computer Science Laboratories in Rome calculated the walkability of more than ...