Mobile robots must continuously estimate their position to navigate autonomously. However, satellite-based navigation systems are not always reliable: signals may degrade near buildings or become ...

Sydney — Australian police on Monday appealed for the urgent return of an 85-year-old man kidnapped in what they said was a case of mistaken identity. Police received reports early Friday that ...

"The kidnapped man remains unaccounted for," a police spokesperson told PEOPLE in an email on Monday, Feb. 16 Becca Longmire is a digital news writer-reporter at PEOPLE. She has been working at PEOPLE ...

The Pima County Sheriff's Department and the FBI are still searching for Nancy Guthrie, the mother of "Today" anchor Savannah Guthrie, after she went missing two weeks ago. They say they are searching ...

Chris Baghsarian was kidnapped from his home in Sydney, Australia, on Friday, Feb. 13 NSW Police Force/Facebook Chris Baghsarian was forcefully taken from his home in Sydney, Australia, on Friday, Feb ...

Add Yahoo as a preferred source to see more of our stories on Google. The FBI released key details about a suspect in the Guthrie case Feb. 10. "The suspect is described as a male, approximately ...

It's been almost two weeks since Nancy Guthrie, the mother of Today Show host, Savannah Guthrie, disappeared from her Arizona home under mysterious circumstances. Nancy was last seen at night on ...

Getting your Trinity Audio player ready... A 4-year-old boy was found safe after he was abducted from his home in Commerce City on Friday afternoon, police officials said. Jeremy Chavez, 45, was ...

Nancy Guthrie, the 84-year-old mother of "TODAY" show co-host Savannah Guthrie, was reported missing Feb. 1. This liveblog has now ended — follow the latest coverage here. The Catalina Hills community ...

• Detained person released: Authorities have released a person detained for questioning in Rio Rico, about 60 miles south of Tucson, CNN affiliate KNXV reported. Authorities earlier searched a car and ...

TUCSON, Ariz. (AP) — Authorities have not identified any suspects or persons of interest in a desperate, five-day search for the missing mother of “Today” show host Savannah Guthrie. But even without ...

The authorities confirmed that blood on Ms. Guthrie’s doorstep belonged to her. Her daughter Savannah, the “Today” anchor, released a video asking for proof that her mother is alive. By Nicholas Bogel ...