The Dead Sea is so salty that visitors can float effortlessly on its surface, creating a phenomenon that feels almost otherworldly. But the famous body of water is rapidly shrinking as scientists sound the alarm about an unfolding ecological disaster.

Here’s what else you need to know to get up to speed and on with your day.

Construction is underway on the White House South Lawn for an octagon-shaped arena that will host a UFC event next month. The fight card is scheduled for June 14 — also President Donald Trump’s 80th birthday — as part of celebrations marking the United States’ 250th anniversary. It’s set to be the first major sporting event ever held on White House grounds. Go inside the preparations.

President Trump’s national approval ratings may be struggling, but recent Republican primaries have shown his grip on conservative voters remains strong. After helping topple incumbents in Indiana, Kentucky and Louisiana, Trump on Tuesday got what he wanted in Texas, where state Attorney General Ken Paxton defeated four-term Sen. John Cornyn. Read more.

The International Rescue Committee says the Ebola outbreak in the Democratic Republic of Congo is spreading faster than the response, as overcrowded camps for displaced people, poor conditions and limited supplies fuel fears the virus could spread further across the region. More than 220 deaths are now believed to be linked to the outbreak, as the IRC warns it could become the deadliest on record without urgent action. Learn more.