The private-sector consortium building the Purple Line says problems beyond its control have added at least 2½ years to the construction schedule; it is entitled to scrap the deal if delays add ...

Purple gromwell contains shikonin derivatives in the plant's root surfaces, ... Hanging by a purple thread. Kyoto University. Journal Plant and Cell Physiology DOI 10.1093/pcp/pcad038.

Google has begun rolling out a new background color for the AdWords listings on Google’s search results. The new color is a pale purple, as opposed to the current pale yellow.

Scraps of dyed thread unearthed in Israel that date back 3,000 years match the descriptions of the purple garments worn by royalty like King Solomon in the Bible.. Researchers from Israel found ...

After five minutes under an infection-like pH, the cotton-polyester thread changes from bright red to dark purple. After three days, the purple fades to light gray.