Happy Tuesday! Unless, of course, you are Dwayne “The Rock” Johnson, Cameron Diaz, Eminem, Octavia Spencer, or Shaquille O’Neal. A new study from Dartmouth economist David Blanchflower found that happiness follows a U-shaped curve over one’s lifetime, with human misery peaking at age 47. Hang in there, Shaq, it’s all uphill from here!

Quick Hits: What You Need to Know

• Russian military hackers have been attempting to hack into the computer networks at Burisma, the Ukrainian energy company where Hunter Biden served as a board member. The New York Times cites security experts who believe the Russians may have been looking for information on the Bidens. 

• New Jersey Sen. Cory Booker ended his campaign for the Democratic presidential nomination after languishing in the polls for months, telling supporters that “we may have challenges right now in our nation, but together, we will rise.”

• Attorney General William Barr said on Monday that the Pensacola naval base shooting last month that killed three and injured eight was “an act of terrorism.”