In recent years, artificial intelligence (AI) has made significant inroads, demonstrating abilities that were once considered solely the province of humans. Here are five interesting examples of AI in action:

1. Google's AlphaGo Defeats World Champion Go Player: In March 2016, Google's AlphaGo artificial intelligence program made history by defeating world champion Go player Lee Sedol in a five-game match. Go is considered to be a much more complex game than chess, and AlphaGo's victory was seen as a major milestone for AI.

2. IBM's Watson Beats Human Champions on Jeopardy!: In 2011, IBM's Watson artificial intelligence system made headlines by defeating human champions on the game show Jeopardy!. Watson was able to successfully answer complex questions by drawing on a massive database of information.

3. Amazon's Alexa Can Recognize Emotions: Amazon's Alexa, the digital assistant powering the company's Echo devices, can now recognize human emotions. This capability was added through a partnership with emotional intelligence startup Affectiva.

4. Facebook's AI Can Generate Fake Faces: Facebook's artificial intelligence research team has developed a system that can generate realistic fake faces. The system, which is based on a deep learning algorithm, can create images that are virtually indistinguishable from real photos.

5. Google's DeepMind Develops AI That Can Learn Like a Human: Google's DeepMind artificial intelligence research lab has developed an AI system that can learn like a human. The system, called DeepMind Lab, is capable of learning how to navigate 3D environments completely on its own.