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Nasal sebum, also known as nose grease/oil, is grease removed from the surface of the human nose.

A mathematical joke is a form of humor which relies on aspects of mathematics or a stereotype of mathematicians to derive humor.

This page is for Wikipedians to list articles that seem a little unusual. These articles are valuable contributions to the encyclopedia, but are a bit odd, whimsical, or something you would not expect to find in Encyclopædia Britannica.

Initially playing blues rock with an experimental flavour, they have also incorporated elements of classical music, folk music, jazz and art rock into their music.

The band have sold more than 60 million albums worldwide.

Marvin Lee Minsky (born August 9, 1927) is an American cognitive scientist in the field of artificial intelligence (AI), co-founder of Massachusetts Institute of Technology's AI laboratory, and author of several texts on AI and philosophy.

Virtual reality (VR) is a computer-simulated environment, whether that environment is a simulation of the real world or an imaginary world. Most current virtual reality environments are primarily visual experiences, displayed either on a computer screen or through special or stereoscopic displays, but some simulations include additional sensory information, such as sound through speakers or headphones.

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The acquisition date listed is the date of the agreement between Google and the subject of the acquisition. The value of each acquisition is listed in US dollars because Google is headquartered in the United States. If the value of an acquisition is not listed, then it is undisclosed. If the Google service that is derived from the acquired company is known, then it is also listed here.