Panama Canal

The Panama Canal's impact on the geopolitical stage far outreaches its roughly 51-mile stretch of land and water. This week, we're trying to understand the canal's murky future - from climate change to President Trump's threat to take it for the U.S. - by looking at its turbulent, cataclysmic birth.

Some veterans are developing cancer, heart disease and other health issues that they blame on herbicides and pesticides they encountered in the area. They were left out of a recent law that made it easier for some veterans with toxic exposure to get care and benefits from the Department of Veterans Affairs. But the VA wants to hear from them.

This week Fort Sam Houston is playing host to Panamax, an annual U.S. Southern Command-sponsored multinational exercise focused on maintaining the…