Buried in the limestone and marble of Namibia, Oman, and Saudi Arabia, scientists have found mysterious micro-tunnels, too small to see, too regular to ignore. These structures, invisible from the ...

Across the dry deserts of southern Peru lies a landscape that seems at first completely ordinary. The ground is flat, pale and silent, stretching so far that the horizon looks blurred in the heat. For ...

Diverging and converging patterns forming on the surface of solidifying liquid metals resemble plotlines in a complex historical novel, in a new international study. The cyclic patterns observed are ...