Islamic militants on Wednesday unleashed a wave of simultaneous attacks, including suicide car bombings, on Egyptian army checkpoints in the restive northern Sinai Peninsula, killing at least 50 soldiers, security and military officials said.

Ashraf Sweilam
Greece's government appeared to be caving into demands from its creditors on Wednesday, offering concessions in a desperate attempt to get more aid hours after its bailout program expired.Elena Becatoros
As Arctic sea ice melts, it could disrupt a powerful Atlantic Ocean current that regulates temperatures in Western Europe and the East Coast of North America.Chelsea Harvey | The Washington Post
As a high-level team of Iranian officials flew here on Tuesday for what appears to be an intensive final week of negotiations for a comprehensive nuclear accord, President Barack Obama issued a warning that he was prepared to walk away from any agreement with a verification regime that consisted of “a few inspectors wandering around every once in a while.”Michael R. Gordon and David E. Sanger
More than three months after a Germanwings airliner crashed into a French mountainside, killing everyone aboard, the airline’s parent company, Lufthansa, made its first proposal to pay for emotional damages on Tuesday, offering the German victims’ families $28,000 each. Lawyers for the relatives immediately dismissed the figure as inadequate.Nicola Clark
By law, it must manage its existing portfolio of loans, loan guarantees and insurance to help foreign customers buy products from American exporters. But now it cannot make new deals.JACKIE CALMES
Shortly after Richard W. Matt and David Sweat were discovered missing from their cells in the honor block of Clinton Correctional Facility in northern New York, Gov. Andrew M. Cuomo sought to tamp down any suggestions of complicity by prison staff members.NOAH REMNICK
Estimates on the cost-benefit ratio of the EPA's regulations on pollutant emissions differ drastically, making it difficult to determine the real value of the cost to power plants.Sarah Caspari
NASA released a photo Tuesday of Wolf volcano on Isabela Island in the Galápagos.Kelsey Warner
California on Tuesday became the largest state in the country to require schoolchildren to receive vaccinations unless there are medical reasons not to do so, as Gov. Jerry Brown signed legislation that ended exemptions for personal or religious reasons.Adam Nagourney