"Extreme heat is the single best predictor of corn and soybean yields in the United States. While average yields have risen continuously since World War II, we find no evidence that relative tolerance to extreme heat has improved between 1950 and 2005. Climate change forecasts project a sharp...

"The United States produces 41% of the world's corn and 38% of the world's soybeans, so any impact on US crop yields will have implications for world food supply. We pair a panel of county-level crop yields in the US with a fine-scale weather data set that incorporates the whole distribution of...

In September 2015, Heads of State and Government will gather in New York to agree the post-2015 development agenda. The role that trade will play in this agenda is neither clear, nor agreed. Yet an open, non-discriminatory, rules-based multilateral trading system underpins sustainable...

"The NBER Bulletin on Aging and Health provides summaries of publications like this. You can sign up to receive the NBER Bulletin on Aging and Health by email. Airports are some of the largest sources of air pollution in the United States. We demonstrate that daily airport runway congestion...