coal-tar

In the 19th century, rivers near coal-fired factories were thick with a sludge called coal-tar or gas-tar, an unfortunate byproduct.

It's Better for Whose Environment? Eric Felten 2010

Its congener, Spongiforma thailandica, is very different from SpongeBob SquarePants: it ranges in colour from pale brownish-grey to reddish-brown and smells strongly of coal-tar.

The new fungus from Bikini Bottom 2011

Along one side ran a high broad fence, blackened over by coal-tar, and spiked and stuck with pointed nails at the top, to prevent any one from climbing over into the garden beyond.

Mary Barton 2010

For example, psoriasis, an autoimmune disease that causes painful and unsightly rashes, has a number of treatment options: Inexpensive topical lotions can be sticky and uncomfortable, ultraviolet-light machines carry a risk of skin cancer, and coal-tar baths can require hospitalization.

Doctors Track Patients' Mood, Social Life to Manage Illness Laura Landro 2012

More dyes followed, and soon coal-tar was far too valuable to dump in a river.

It's Better for Whose Environment? Eric Felten 2010

"Study Sees Parking Lot Dust As a Cancer Risk," on MSNBC. com, focuses on how chemicals in a common coal-tar sealants used on driveways and parking lots can be tracked into homes, where they might pose a health risk.

Study looks at possible link between chemicals in driveway sealant and cancer 2010

The artificial sweeteners saccharine, aspartame and cyclamate were each invented unintentionally as scientists were working in other areas, from anti-ulcer drugs to coal-tar derivatives.

The Search for Serendipity L. Gordon Crovitz 2010

"Study Sees Parking Lot Dust As a Cancer Risk," on MSNBC.com, focuses on how chemicals in a common coal-tar sealants used on driveways and parking lots can be tracked into homes, where they might pose a health risk.

Study looks at possible link between chemicals in driveway sealant and cancer 2010

The artificial sweeteners saccharine, aspartame and cyclamate were each invented unintentionally as scientists were working in other areas, from anti-ulcer drugs to coal-tar derivatives.

The Search for Serendipity L. Gordon Crovitz 2010

The artificial sweeteners saccharine, aspartame and cyclamate were each invented unintentionally as scientists were working in other areas, from anti-ulcer drugs to coal-tar derivatives.

The Search for Serendipity L. Gordon Crovitz 2010