Because of their massive size, blue whales are known as the ocean’s “gentle giants.” They are vital to the ocean ecosystem, but their numbers are declining. In this episode, 2016 Pew marine fellow Dr. Asha de Vos unpacks the significance of blue whales to our ocean’s health and how effects from human activity, such as increased shipping and the whale-watching industry, influence the blue whale’s population and migratory pattern.

Since this episode first aired in 2019, de Vos has continued conservation efforts through her organization, Oceanswell, and has advanced research on the effects of plastic pollution in Sri Lanka.

Have you tried to figure out whether the fish you eat is sustainably sourced? At least 1 in 5 fish caught in the global ocean is a product of illegal, unreported, and unregulated fishing—one of the main threats to the health of the ocean.

In this episode, part of our “From Lab to Life” series, we hear from Grantly Galland, who supports The Pew Charitable Trusts’ work on fisheries around the world. Grant tells us about his previous career as a fish biologist and researcher and how he traded in his wetsuit for a business suit to support policies leading to more sustainable fish stocks and to protect the marine environment from overfishing.

Each year, The Pew Charitable Trusts releases the “State of the City” report, which offers a data-rich snapshot of Pew’s hometown, Philadelphia. In this episode, Katie Martin, who leads Pew’s Philadelphia research and policy initiative, breaks down the highlights from the 2025 edition. She discusses the city’s successes, such as the decrease in poverty—at 20.3%, it’s the lowest it’s been in more than two decades—and its ongoing challenges, including the decline in homeownership, and how this troubling trend impacts Philadelphia’s ranking as a city of homeowners.