Puerto Rico's governor says the island's largest public university is partnering with federal agencies to oversee a U.S.-funded project aimed at trying to develop a prophylactic vaccine for the HIV virus that causes AIDS.

Gov. Alejandro Garcia Padilla said Tuesday the University of Puerto Rico will work with the National Institutes of Health and other public and private agencies. Officials said 30 scientists and students will participate in the five-year project that will take place in three stages, starting with molecular research and development.

Twitter is testing a way to let users go shopping or make charitable contributions between tweets.

A small percentage of users will receive tweets from Twitter test partners Monday featuring a "buy" button that lets them make purchases or donate money.

Lava from one of the world's most active volcanoes has been advancing at a slower pace the past few days and is now moving parallel to a sparsely populated subdivision on Hawaii's Big Island.

Lava from Kilauea volcano was still at least a mile (1.6 kilometers) from any homes in Kaohe Homesteads, Hawaii County Civil Defense Director Darryl Oliveira said.

A snail once thought to have been among the first species to go extinct because of climate change has reappeared in the wild.

The Aldabra banded snail, declared extinct seven years ago, was rediscovered on Aug. 23 in the Indian Ocean island nation of Seychelles. The mollusk, which is endemic to the Aldabra coral atoll — a UNESCO World Heritage Site — had not been seen on the islands since 1997, said the Seychelles Islands Foundation.

Recent hacks exposing nude photographs of Jennifer Lawrence and other celebrities are prompting calls for people to fortify their online accounts with a second layer of security.

Thieves broke into the celebrity accounts at online storage services such as Apple's iCloud. Although Apple's systems weren't compromised, the hackers were able to figure out passwords and answers to personal security questions, according to the company.

New monkey studies show that one shot of an experimental Ebola vaccine can trigger fast protection, but the effect waned unless the animals got a booster shot made a different way.

Some healthy people are rolling up their sleeves at the National Institutes of Health for the first human safety study of this vaccine in hopes it eventually might be used in the current Ebola outbreak in West Africa.

Children's kidney and thyroid cancers have increased in recent years, and though the diseases are rare, experts wonder if the rising rates could be related to obesity.

The rate for all childhood cancers combined, 171 cases per million children, remained stable from 2000 to 2009 although slight increases were seen in blacks and adolescents, according to a report from researchers at the federal Centers for Disease Control and Prevention.

Oprah Winfrey and a team of guests on Saturday completed the first stop of an eight-city U.S. tour of "Oprah's The Life You Want Weekend," rocking an Atlanta arena where thousands danced, applauded and sought inspiration for transforming their lives.

Atlanta was the opening city and featured Oprah and such guests as authors Deepak Chopra and Elizabeth Gilbert, inspirational speaker Iyanla Vanzant and pastor Rob Bell. A statement released by organizers said the arena tour was intended as a catalyst for a wider movement to engage, encourage and empower women.

Molly Glynn, an accomplished Chicago theater actress who also played a recurring role as a doctor on the TV series "Chicago Fire," has died after a tree toppled by a powerful storm struck her as she rode her bike in a forest park. She was 46.

Glynn was with her husband, Joe Foust, when the storm rolled quickly into the area, just north of Chicago, the executive director of First Folio Theatre and a close family friend, David Rice, said Sunday.

A couple of months before Serena Williams capped her dominant run to a third consecutive U.S. Open championship and 18th major singles title Sunday night, she sat down with coach Patrick Mouratoglou to decipher why the season had been such a struggle by her standards.

At the time, Williams was coming off a third-round loss at Wimbledon, which followed a second-round loss at the French Open, which followed a fourth-round loss at the Australian Open — and, when Grand Slam success defines a legacy, that simply wouldn't do. The quest to match Chris Evert and Martina Navratilova at 18 was weighing on her.