That's not great for visually impaired individuals, so Facebook has turned to artificial intelligence to improve their experience. A blind person can now hear an audio message describing a friend's photo that shows people dancing or riding bikes. To do so, Facebook's algorithm had to be taught what it was seeing. Artificial intelligence is the secret sauce behind making a project like this possible. It can do everything from translate languages, understand human speech and identify diseases.

Facebook has revealed it is using artificial intelligence in its ongoing fight to prevent terrorist propaganda from being disseminated on its platform. "We want to find terrorist content immediately, before people in our community have seen it," read the message posted Thursday. "Already, the majority of accounts we remove for terrorism we find ourselves. But we know we can do better at using technology -- and specifically artificial intelligence -- to stop the spread of terrorist content on Facebook." Some of the roles AI plays involve "image matching" to see if an uploaded image matches something previously removed because of its terrorist content. "Language understanding," the company says, will allow it to "understand text that might be advocating for terrorism."

Facebook has revealed it is using artificial intelligence in its ongoing fight to prevent terrorist propaganda from being disseminated on its platform. "We want to find terrorist content immediately, before people in our community have seen it," read the message posted Thursday. "Already, the majority of accounts we remove for terrorism we find ourselves. But we know we can do better at using technology -- and specifically artificial intelligence -- to stop the spread of terrorist content on Facebook." Some of the roles AI plays involve "image matching" to see if an uploaded image matches something previously removed because of its terrorist content. "Language understanding," the company says, will allow it to "understand text that might be advocating for terrorism."

Facebook is using a combination of pattern recognition, live chat support from crisis support organizations and other tools to prevent suicide, with a focus on its Live service. There is one death by suicide every 40 seconds and over 800,000 people kill themselves every year, according to the World Health Organization. "Facebook is in a unique position -- through friendships on the site -- to help connect a person in distress with people who can support them," the company said Wednesday. The move by Facebook appears to aim to prevent the live-streaming of of suicides on the Live platform, which was launched in April last year, and allows people, public figures and pages to share live videos with friends and followers. The company said that its suicide prevention tools for Facebook posts will now be integrated into Live, giving people watching a live video the option to reach out to the person directly and to report the video to the company.

Each day on Facebook, millions of people comment about baby photos, discuss presidential hopeful Donald Trump's latest musings, or share their thoughts on the latest blockbuster movie.

Facebook on Monday began using artificial intelligence to help people with visual impairments enjoy photos posted at the leading social network. Facebook introduced machine learning technology trained to recognize objects in pictures and then describe photos aloud. "As Facebook becomes an increasingly visual experience, we hope our new automatic alternative text technology will help the blind community experience Facebook the same way others enjoy it," said accessibility specialist Matt King. The feature was being tested on mobile devices powered by Apple iOS software and which have screen readers set to English. Facebook planned to expand the capability to devices with other kinds of operating systems and add more languages, according to King, who lost his vision as a US college student studying electrical engineering.