The Trump administration promises a $1 trillion investment to rebuild the nation’s infrastructure, but has yet to offer design or budget details. Host Steve Curwood spoke with former Massachusetts governor and 1988 Democratic Presidential nominee Michael Dukakis offers a vision of rebuilt and expanded infrastructure, including national rail and public transportation.

Frigate birds are one of the only seabirds with feathers that are not water-proof, but as Michael Stein explains, their ability to stay airborne for weeks at a time makes up for that trait.

Some seabirds are brilliant at catching fish, but as Mary McCann explains, blue-footed boobies need to watch out for hungry thieving Frigatebirds.

An international team of scientists is studying the effects of the 2010 Deepwater Horizon spill – by looking back at another spill 35 years ago in the Gulf of Mexico. In this report, David Levin tags along as Mexican and American researchers unearth sediment cores from the ocean floor near the site of the Ixtoc oil well blowout that reveal how the seabed reacted.

Fulfilling a campaign promise, President Trump’s State Department has approved completion of the Keystone XL pipeline. But pipeline builder TransCanada still faces significant hurdles in federal court and in the state of Nebraska. Jane Kleeb ,founder and President of Bold Alliance|Bold Nebraska, tells host Steve Curwood how worries about water safety have caused many citizens, farmers, ranchers, and Native American tribes to unite to oppose the pipeline’s route through Nebraska’s sensitive Sandhills area.

We remember the renowned writer Sir Derek Walcott, who died in March. The Saint Lucian poet focused on the sea and the Caribbean ecology, and in 1992, won the Nobel Prize in Literature. In this recording, Sir Derek reads his poem "Sea Grapes."

The Yurok Tribe has lived along the Klamath River in Northern California for thousands of years, relying on the annual salmon run for food and revenue. But dams on the Klamath have created conditions for a deadly aquatic parasite that threatens to wipe out the vital Chinook run. Yurok Tribal Chairman Thomas O’Rourke shares what might save the salmon and fishing communities of the Klamath.