The photographer Sebastiao Salgado, in New York City on September 18, says we are at a "special moment" — our world now needs to be protected from climate change and other forces. Misha Friedman for NPR hide caption

itoggle caption Misha Friedman for NPR

Alibaba founder and CEO Jack Ma has much to laugh about. Shares in the company opened at $92.70 in the New York Stock Exchange on Friday. The company is now valued at more than $200 billion — that's bigger that Amazon and Facebook. Mark Lennihan/AP hide caption

itoggle caption Mark Lennihan/AP

Psychologists say spanking and other forms of corporal punishment don't get children to change their behavior for the better. © Ian Nolan/cultura/Corbis hide caption

itoggle caption © Ian Nolan/cultura/Corbis

Education experts faced off on the motion "Embrace The Common Core" at an Intelligence Squared U.S. debate, moderated by John Donvan (center). Samuel LaHoz/Intelligence Squared U.S. hide caption

itoggle caption Samuel LaHoz/Intelligence Squared U.S.

British Prime Minister David Cameron said Friday now that voters in Scotland have rejected independence, he is committed to giving more powers not only to Scotland, but also to "the people of England, Wales and Northern Ireland." Lefteris Pitarakis/AP hide caption

itoggle caption Lefteris Pitarakis/AP

Adrian Peterson (right) was ordered to stay away from his team, the Minnesota Vikings, while he addresses child abuse charges in Texas. Charlie Neibergall/AP hide caption

itoggle caption Charlie Neibergall/AP

Don Spirit is pictured in this 2001 handout photo obtained by Reuters on Friday. Police identified Spirit as the man who gunned down his six grandchildren and daughter before taking his own life. Reuters/Landov hide caption

itoggle caption Reuters/Landov

A remote camera screen grab provided by the French army shows two Rafale jet fighters flying over Iraq on Friday. French President Francois Hollande announced that the fighters had carried out their first airstrikes in northern Iraq. AP hide caption

itoggle caption AP