The oil cartel is split over how to react to the sharp slump in oil prices.
We know how they react to short, sharp shocks: They buy on dips.
The heated debate over how to react to the sharp fall in oil prices has led to some suggesting that Thursday's meeting could last longer much longer than usual.
Ireland, meanwhile, is often cited as a country where public-sector workers have reacted to a sharp downturn with impressive self-denial.
Even if the PETM isn't a perfect equivalent of today's climate (it was slower, and it happened in a world that was already warmer than today), it still tells us how the planet reacts to a sharp excess of carbon in the atmosphere.
My mom, on the other hand, had a pretty sharp tongue, but my dad never really seemed to react to it.
Indeed, the outgoing affability of most dogs towards humans and other dogs is in sharp contrast to the mix of fear and aggression with which wolves react to animals from other packs.
The sharper your reflexes are, the quicker you'll be able to react to your defender, which can give you a huge advantage.
Still, there has been sharp debate among scientists about whether results in ferrets can predict how humans will react to similar infections, with some researchers discounting the data entirely.
