Avijit Roy's writings denounced fundamentalist thought and earned him death threats from Islamist groups. His wife, Rafida Ahmed, who was with him during the attack Thursday, was severely wounded.
There's little money for cancer care in the developing world. And many children with curable cancers die. Two doctors believe it's time to stop accepting cancer as a death sentence in poor countries.
The 70-year-old, best known for the stadium rock anthem "Rock & Roll (Part 2)," was convicted for sex offenses during the 1970s and '80s against three girls between the ages of 8 and 13.
Scientists have recovered cultivated wheat DNA from an 8,000-year-old submerged site off the British coast. The finding suggests hunter-gatherers were trading for the grain long before they grew it.
The masked man who appeared to behead hostages in videos for the so-called Islamic State, also known as ISIS, has been revealed. Known in the media as "Jihadi John," his real name is Mohammed Emwazi.
The U.S. economy has been doing well. That's pushed the value of the U.S. dollar up — relative to other currencies. A strong dollar sounds like good news, but there are winners and losers.
The British government has long been concerned about extremism emerging within its borders. Linda Wertheimer talks to Shashank Joshi of the Royal United Services Institute about extremism.
A video has surfaced that appears to show members of the self-proclaimed Islamic State, also known as ISIS, smashing priceless antiques at a museum in Mosul, Iraq.