A four-holed piece of ivory provides a glimpse into ancient rope-making (www.sciencenews.org)
The tool, unearthed in Central Europe, suggests that locals made devices for stringing together sturdy cords over 35,000 years ago, researchers say.
Astronauts may be able to make cement using their own pee (www.sciencenews.org)
Lunar dust and a compound found in urine could be used to build future dwellings on the moon, a new study finds.
