Grizzly bears have domed shoulders, tall foreheads, and pale-tipped fur that gives them their grizzled appearance. If you're comparing two bears, one might be lighter or darker in color, or fatter for hibernation. But for the most part, there's no universal, unique marker a person can use to tell two bears apart. This issue is a challenge for scientists like University of Victoria wildlife conservationist Melanie Clapham, whose research on grizzly bear behavior requires her to monitor individual bears over years, Adam van der Zwan reports for CBC. But now, Clapham and her research team have developed a solution: facial recognition for bears. Bears grow and shrink a lot depending on the season, and their appearance changes frequently during their 20- to 25-year-long lifespans.

IBM's CEO said the company will no longer offer facial recognition software while questioning how similar technology is used by law enforcement. In a letter to Congress submitted Monday, IBM CEO Arvind Krishna said the company will not support any technology that could lead to mass surveillance, racial profiling or "violations of basic human rights and freedoms." "We believe now is the time to begin a national dialogue on whether and how facial recognition technology should be employed by domestic law enforcement agencies," wrote Krishna. The letter follows protests demanding change among police forces nationwide in the wake of the death of George Floyd, who died while in police custody in Minneapolis last month. It's official:The US is in a recession, ending longest expansion in history The CEO also advocates for federal rules to hold police more accountable, as well as a national policy to improve technology used to maintain transparency, including body cameras and modern data analytics techniques.