But scientists now can show that differences between the time when a shark's nostrils receive smells is more important than the strength of the odors.

VOA: special.2010.08.03

Now here are some differences: the older patients were given adjuvant chemotherapy in weaker doses and for a shorter period of time.

VOA: standard.2010.03.18

And with only two months left and numerous hurdles remaining, questions are being raised about whether nations can narrow their differences in time.

VOA: standard.2009.09.28

"Some time ago,on this question, we had only differences.

VOA: standard.2009.07.15

Speaking via Skype,she says no. "I think further studies will be necessary to show whether the differences we've demonstrated depending on delivery mode of babies when they first emerge into the world actually carry over time, and whether those differences might contribute to health outcomes."

VOA: standard.2010.06.30