A new U.S. government report released Tuesday finds that climate change is already having a broad impact on both weather and the economy.
The acting government in Kiev dispatched a special police unit to try to control the deadly clashes in the southern Ukrainian port city of Odessa.
Ukrainian forces have launched what appears to be a major operation to rout pro-Russia forces from occupied government buildings in the country's east. Two helicopters were shot down by separatists, killing the pilots, both sides report.
Noting that one in five women is sexually assaulted in college, the White House is releasing new guidelines to help victims of that violence, and to improve the way schools handle such cases. Campus sexual assaults are notoriously under-reported, and schools' disciplinary processes vary widely.
The White House announced sanctions Monday against seven top Russian officials with links to President Vladimir Putin, including freezing their assets and banning them from obtaining U.S. visas.
Tornadoes tore through parts of Arkansas and Oklahoma overnight, killing at least 17 people and leveling neighborhoods.
The likelihood of the upcoming climbing season on Mount Everest being canceled altogether seemed to veer from very possible to very unlikely to somewhere in between within the space of less than an hour on Tuesday as news reports came in from the world's tallest mountain.
The United Nations Mission in South Sudan says that "targeted killings of civilians" based on ethnicity were carried out in the war-torn country after rebels last week seized the city of Bentiu.
President Obama says that enrollment under the Affordable Care Act has reached 8 million after the March 31 sign-up deadline was extended by two weeks.
The technology behind Japan's magnetically levitated train system, which whooshes passengers to their destinations at speeds topping 300 mph, could come to the U.S. without a traditional license fee, according to Japanese media outlets.