An environmental documentary that follows a risk-laden effort to save a rare and elusive porpoise won over audiences at the recent Sundance Film Festival. Correspondent JoAnn Valenti takes a look at the film, along with other documentaries that explore the role of journalists and journalism. 

The vast Colorado River, recently in the news over a troubled drought deal, is at the heart of numerous environmental problems in the American West, where water is scarce and the legal complexities of water rights voluminous. The latest Issue Backgrounder offers an explainer on the story, which involves at least seven states, the federal government, Native American tribes, a hornet’s nest of irrigation districts and even Mexico.

The fierce contest over the Trump border wall has critical environmental implications, both local and regional, per the latest TipSheet. A key suit against the Trump emergency declaration was filed by environmental groups and plans for a border barrier may harm significant wildlife habitat, as well as numerous migrating species, including some that are endangered. Get the back story and why it matters, along with story ideas and reporting resources.

Environmental justice-related stories are expected to get more attention in the news media in 2019. But that’s not because the challenge of protecting marginalized communities from lopsided environmental impacts is being met. This week’s TipSheet explains, in a look-ahead to environmental justice stories making the news, the many forms the problem takes, the many communities affected and the emerging notion of “climate justice.”

Plastic straws might have quickly become this summer’s bogeyman, with bans by Starbucks, hotel chains, resorts and some big cities. But as this week’s TipSheet points out, straws are only a part of the massive marine litter problem facing the world’s oceans. Here’s how to put recent straw bans into broader perspective.