The Nuclear Materials Security Index notes progress in several countries. In the last two years, seven have given up most of their weapons-grade uranium and plutonium, while others are tightening security measures.
The US government released more good news this month about impeding entry of cocaine into the country. Still, opinions vary when it comes to interpreting the overall cocaine-use decline and the possible reasons for it.
The city has boosted foot patrols in high-crime areas and is adding again to a downsized police force. It's too soon to say whether that explains a 33 percent drop in the homicide rate – or whether the improvement can be sustained.
The rate of partner-to-partner violence dropped 64 percent between 1994 and 2010, a Justice Department report has found. The trend, almost unnoticed, stems from a broad shift in attitude toward domestic violence.