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Water levels at the Great Salt Lake have dropped dramatically in the last 170 years

The Great Salt Lake is half the size it was in 1847. Scientists previously thought the lake was shrinking due to a shifting climate, but a study published last week in Nature Geoscience says it's getting smaller because humans are using water before it can reach the lake, writes Sarah Derouin for Science Magazine.

Why it matters: The Great Salt Lake is an important refuge for migratory birds and rare aquatic species. As the metropolitan area around the Great Salt Lake grows, the impact on water supply will need to be considered. Study author Wayne Wurtsbaugh tells Derouin water inflows into the lake will need to increase by at least 24% for it to stay healthy. Other salt lakes are shrinking, as well, likely for related reasons.

What they did: The researchers re-created 170 years of climate data using climate records, tree ring data, and stream level records. Precipitation changed little over time but the amount of water flowing into the lake declined greatly.

Go deeper

Biden to tap telecom trio for NTIA, FCC posts

Jessica Rosenworcel. Photo: Bill Clark/CQ Roll Call

President Joe Biden on Tuesday is expected to name Alan Davidson as head of the telecom arm of the Commerce Department, Jessica Rosenworcel as chairwoman of the Federal Communications Commission and Gigi Sohn as a commissioner at the FCC, according to a person familiar with the process.

Why it matters: Internet availability and affordability has been a key policy priority for the White House, but the administration lagged in tapping people for the agency posts that oversee the issues.

22 mins ago - Technology

Facebook seeks fountain of youth

Data: Piper Sandler Taking Stock With Teens Study; Chart: Axios Visuals

Facebook CEO Mark Zuckerberg on Monday said that the company is pivoting its strategy to focus on young adults, following reports that teens have fled its apps.

Why it matters: A series of stories based on leaked whistleblower documents suggest the company sees the aging of its user base as an existential threat to its business.

Too big to cover alone: Newsrooms team up

Illustration: Annelise Capossela/Axios

News outlets are increasingly willing to work together on big, multifaceted stories — including this week's reporting on leaked documents from a Facebook whistleblower.

Why it matters: Collaborative efforts help bring more resources to bear on complex stories, some of which require a global reporting effort. But they require high degrees of coordination, and competition can sometimes get in the way.