Boston's scheduled NHL and NBA games were called off after the bombings, while beefed-up security — including bomb-sniffing dogs — patrolled hockey, basketball, and baseball games around the country.
Bomb attack in Boston that killed two and injured scores of others prompts a thorough police search for unexploded devices. One was already found and rendered harmless. Experts cite hard-to-detect nature of the bombs.
Boston explosions: Los Angeles, New York City, and London have stepped up security in the wake of two explosions near the finish line of the Boston Marathon.
In a move that is alternately naive, courageous, and entertaining, British journalist Adharanand Finn transplants to Kenya to learn from the world's best runners.
Some Boston marathoners today will have trained at 8,000 feet above sea level in the Kenyan village of Iten. The big money in the sport has attracted younger athletes here.
A newborn camel and its mother are seen at the zoo in Zurich, Switzerland, on Thursday.