The so-called Candor Tetrahedron. (NASA/JPL-Caltech/UArizona) It would be tempting to assume there's nothing much of note ...
Ancient Martian rivers were not the modest, slow-moving streams that earlier models described. A remote-sensing technique ...
Rare hand axes from the Sakhnin Valley show Homo erectus picked fossil- and crystal-rich stones for visual appeal, hinting at ...
Two archaeologists explore the enduring myth that extraterrestrials contributed to the various ancient cultures around the ...