The five most popular CNN.com stories during the last 24 hours, according to Newspulse.
'Van der Sloot' Google search stuns slain woman's brother: The brother of a woman who was found slain last week in a Peruvian hotel room says that after he learned of the suspect's name, he did an internet search on his name and was shocked to learn he'd been a suspect in a different woman's high-profile disappearance.
Apple unveils iPhone 4: Apple CEO Steve Jobs on Monday introduced the newest version of the company's popular smartphone: iPhone 4. The phone will come in two colors - black and white - and will go on sale June 24 in the United States and four other countries.
Roman gladiator cemetery found in England: Heads hacked off, a bite from a lion, tiger or bear, massive muscles on massive men - all clues that an ancient cemetery uncovered in northern England is the final resting place of gladiators, scientists have announced after seven years of investigations.
Search on for missing child in Oregon: A search for a second-grade student who disappeared last week after he arrived at his Portland, Oregon, elementary school intensified Monday.
White House reporter Helen Thomas retiring: Longtime White House reporter Helen Thomas has retired effective immediately, Hearst Corp. said Monday. Her retirement comes amid a furor created last week by her controversial comments regarding Jewish people.