Regular mammograms to screen for breast cancer should start younger, at age 40, according to an influential U.S. task force. Women ages 40 to 74 should get screened every other year, the group said.

CHARLOTTE, N.C. (AP) — Four law enforcement officers in North Carolina who were killed while trying to capture a man immediately faced gunfire as they approached, unable to withstand shots from upstairs in a house, authorities said Tuesday.

NEW YORK (AP) — Protesters and police clashed Monday at the University of Texas in a confrontation that resulted in dozens of arrests, and Columbia University began issuing suspensions as colleges around the U.S. begged pro-Palestinian demonstrators to clear out tent encampments as commencement ceremonies approach.

CHARLOTTE, N.C. (AP) — Three officers on a U.S. Marshals Task Force serving a warrant for a felon wanted for possessing a firearm were killed and five other officers were wounded in a shootout Monday at a North Carolina home, police said.

DALLAS (AP) — NASA’s Webb Space Telescope has revealed the sharpest images yet of a portion of a horse-shaped nebula, showing the “mane” in finer detail.

NEW YORK (AP) — Colleges around the U.S. implored pro-Palestinian student protesters to clear out tent encampments with rising levels of urgency Monday, including an ultimatum from Columbia University for students to sign a form and leave the encampment by the afternoon or face suspension.

PITTSBURGH (AP) — On a three-lane test track along the Monongahela River, an 18-wheel tractor-trailer rounded a curve. No one was on board. A quarter-mile ahead, the truck's sensors spotted a trash can blocking one lane and a tire in another. In less than a second, it signaled, moved into the unobstructed lane and rumbled past the obstacles.

Protests on U.S. college campuses opposing Israel’s continuing military campaign against Gaza reflect the views of a significant minority of Gen Z voters, a recent online survey revealed.

ALBUQUERQUE, N.M. (AP) — Three women who were diagnosed with HIV after getting “vampire facial” procedures at an unlicensed New Mexico medical spa are believed to be the first documented cases of people contracting the virus through a cosmetic procedure using needles, federal health officials said.

LUPTON, Ariz. (AP) — Interstate 40 was reopened in both directions Sunday as fire crews continued to watch over a controlled burn of remaining fuel from a freight train derailment near the Arizona-New Mexico state line, a local fire chief said. Earlier evacuation orders have now been lifted.

SULPHUR, Okla. (AP) — Tornadoes killed four people in Oklahoma and left thousands without power Sunday after a destructive outbreak of severe weather flattened buildings in the heart of one rural town and injured at least 100 people across the state.

PHILADELPHIA (AP) — Police departments across the United States are reporting an increase in their ranks for the first time since the COVID-19 pandemic and the 2020 killing of George Floyd, which led to a historic exodus of officers, a survey shows.

OMAHA, Neb. (AP) — Tornadoes wreaked havoc Friday in the Midwest, causing a building to collapse with dozens of people inside and destroying and damaging hundreds of homes, many around Omaha, Nebraska.

NEW YORK (AP) — Months before they pitched their tents on Columbia University's main lawn, inspiring a wave of protest encampments at college campuses nationwide, a small group of pro-Palestinian student activists met privately to sketch out the logistical details of a round-the-clock occupation.

The University of Southern California canceled its main graduation ceremony and dozens more college students were arrested at other campuses nationwide Thursday as pro-Palestinian demonstrations continued to spread.

WASHINGTON (AP) — Coal-fired power plants would be forced to capture smokestack emissions or shut down under a rule issued Thursday by the Environmental Protection Agency.

BALTIMORE (AP) — The first cargo ship passed through a newly opened deep-water channel in Baltimore on Thursday after being stuck in the harbor since the Francis Scott Key Bridge collapsed four weeks ago. The Balsa 94, a bulk carrier sailing under a Panama flag, passed through the new 35-foot channel headed for St. John, Canada.

AUSTIN, Texas (AP) — Police bulldozed into student protesters at a Texas university Wednesday, arresting over a dozen people, while new student encampments sprouted at Harvard and other colleges in part of a growing wave of pro-Palestinian protests.

WASHINGTON (AP) — More than one-quarter of U.S. adults over age 50 say they expect to never retire and 70% are concerned about prices rising faster than their income, an AARP survey finds.

NEW YORK (AP) — Doctors have transplanted a pig kidney into a New Jersey woman who was near death, part of a dramatic pair of surgeries that also stabilized her failing heart.

WASHINGTON (AP) — The Supreme Court will consider Wednesday when doctors can provide abortions during medical emergencies in states with bans enacted after the high court’s sweeping decision overturning Roe v. Wade.

The nation's school meals will get a makeover under new nutrition standards that limit added sugars for the first time, the U.S. Department of Agriculture announced Wednesday.

WASHINGTON (AP) — The Senate has passed $95 billion in war aid to Ukraine, Israel and Taiwan, sending the legislation to President Joe Biden after months of delays and contentious debate over how involved the United States should be in foreign wars.

NEW YORK (AP) — Columbia canceled in-person classes, dozens of protesters were arrested at New York University and Yale, and the gates to Harvard Yard were closed to the public on Monday as some of the most prestigious U.S. universities sought to defuse campus tensions over Israel's war with Hamas.

WASHINGTON (AP) — The Supreme Court will consider Monday whether banning homeless people from sleeping outside when shelter space is lacking amounts to cruel and unusual punishment. The case is considered the most significant to come before the high court in decades on homelessness, which is reaching record levels in the United States.