President Trump visited the U.S. border with Mexico yesterday, reiterating his demand that Congress fund a wall to end the partial government shutdown, now in its 21st day. As it ties the record for the longest shutdown in American history, the economic costs are piling up, as workers go without pay and industries feel the impact of reduced government services. Scott R. Baker, a finance professor who looked at the 2013 government shutdown, explains that the costs are usually small in the short term. But if a shutdown drags on, the economic damage could be severe, he writes.

While a new federal study shines light on the extent of food insecurity among America’s college students, the recommendations don’t go far enough to address the problem, says Suzanna Martinez from the University of California, San Francisco. The campus hunger expert offers up some other solutions that she says would be more effective.

During the first half of the 20th century, George Platt Lynes was one of the world’s most successful commercial and fine art photographers. But to Lynes, a gay man, his most important works were his photographs of nude men, which, due to prevailing attitudes toward homosexuality, he needed to keep hidden away. Indiana University’s Rebecca Fasman tells the story of how Lynes quietly gifted his male nudes to famous sexologist Alfred Kinsey, who kept the identities of the subjects secret for years. Now many of them are on display for the first time.