The Summer Games open Aug. 5 in Rio de Janeiro, but the country's many problems seem to be turning off ticket buyers in Brazil and abroad.
Laughter turns out to be a universal language in more ways than we realize.
Human skin has properties that are hard to mimic, but a Stanford engineer is working to create a type of artificial skin that can sense, heal and generate its own power.
Three players made history, teaming up to record three aces on a single hole on the same day for the first time ever at the Masters.
A man shows up in the emergency room with a speedy, irregular heartbeat, but can't say when it first went awry. No problem. The ER doctors just checked the phone records of his fitness tracker.
Transgender people tend to have more mental health problems than the general population, but having supportive parents in childhood may help reduce that risk, a study finds.
The U.S. State Department, the United Nations and human rights groups say South Korea's controversial National Security Law chokes freedom of expression.
A study of Social Security and tax records says poor people live longer in some cities than in others, and it's not clear why.
Lunada Bay is a premier surf spot in Southern California. But a lawsuit alleges the mostly affluent, middle-age locals who live and surf there use violence and intimidation to keep outsiders away.
Pope Francis goes to Greece this week to meet the Eastern Orthodox Church Patriarch Bartholomew I of Constantinople. Monsignor Paul McPartlan of Catholic University explains the history of the divide.