degrade

But many of their earlier designs depend on synthetic catalysts or inorganic semiconductors, which either degrade quickly, waste much of the solar spectrum, or contain toxic elements such as lead.

This style prized tracks that hit like a brick through a window, with tossed-off, degraded production that would give older Sinatra-lovers a heart attack.

Officers have been issued with advice to improve their conduct after "degrading and inappropriate comments," were recorded on a phone seized during a man's arrest, an investigation has found.

"By then, the worn-out and considerably degraded glaciers will 'recouple' to the steadily warming atmosphere, sealing their fate," says Shaw.

Lifespan: Heavy use degrades the coating in about a year, though judicious care can extend the pan’s life to, say, three years.