LEDs combined with a copper-based molecular catalyst turn out to be a more sustainable way to develop chemical compounds with potential uses in medicine and electronics.
Chinese regulators are mulling a deeper cut in new carbon quotas, a move that would make it more expensive to run small and inefficient coal power plants.
Bullion is fluctuating near a key resistance level of about $1,835 an ounce, after a decline in nominal bond yields from a two-year high helped gold advance earlier in the week.