News
- Materials Science
Water Repellency Goes Nano: Carpet of carbon nanotubes cleans itself
Forests of carbon nanotubes coated with Teflon yield a superhydrophobic material—the ultimate self-cleaning surface.
- Earth
Blame the Sea? Ocean may be melting ice shelf from below
Significant portions of a large Antarctic ice shelf just south of one that suddenly broke apart in February 2002 are rapidly thinning and may suffer a similar, catastrophic demise in less than a century.
- Anthropology
Stone Age Code Red: Scarlet symbols emerge in Israeli cave
Lumps of red ocher excavated near human graves in an Israeli cave indicate that symbolic thinking occurred at least 90,000 years ago, much earlier than archaeologists have traditionally assumed.
