Exercise is one of the top benefits for cyclists, but the health effects of air pollution on riders is less well-known. A group of scientists is trying to figure out what exactly those health effects might be so they can create a safer commute for cyclists.
Haiti has suffered through four devastating storms in the past two months. Hundreds of thousands remain without adequate food, shelter and sanitation. United Nations relief efforts continue and key to the success of those efforts is telecommunications.
PRI's The World speaks with Lester Brown, head of the Earth Policy Institute, about the life and career of Norman Borlaug, a scientist whose work developing high-yield crops earned him the Nobel Peace Prize in 1970. He died this past weekend.
The US and Russia are moving closer to signing a new arms control agreement that would reduce the nuclear arsenals in both countries. The World's Matthew Bell reports on the significance of the treaty and what obstacles lay ahead.