There are cosmic alignments over the largest structures ever discovered in the Universe - the rotation axes of the central supermassive black holes in quasars billions of light years apart are parallel to each other. 

Quasars are galaxies with very active supermassive black holes at their centers. These black holes are surrounded by spinning discs of extremely hot material that is often spewed out in long jets along their axes of rotation. Quasars can shine more brightly than all the stars in the rest of their host galaxies put together.

New artificial intelligence software uses photos to locate documents on the Internet with far greater accuracy than ever before, showing for the first time that a machine learning algorithm for image recognition and retrieval is accurate and efficient enough to improve large-scale document searches online.

The system uses pixel data in images and potentially video - rather than just text -- to locate documents. It learns to recognize the pixels associated with a search phrase by studying the results from text-based image search engines. The knowledge gleaned from those results can then be applied to other photos without tags or captions, making for more accurate document search results. 

Vehicle fatalities are the most common cause of accidental death around the world. In the US alone, there are 30,000 deaths in car crashes each year. 

Imagine we gave you three letters, say G, C and D. Then we gave you a name to associate to some combination of those three letters. How many could you recall on command?

Guitarists in cover bands do that all of the time. They can play thousands of songs from memory, and it's not uncommon in most musicians. There have been numerous studies regarding music and memory and a peek inside the brains of professional musicians adds to that.

Volcanoes have long been known to have an impact on climate - the 1815 Tambora volcanic eruption is famous for its impact on climate worldwide, making 1816 the 'Year Without a Summer'.

Maybe they are the reason global warming has not taken off the way climate researchers estimated it would. Sulfur dioxide gas that eruptions expel might be cooling the atmosphere more than previously thought, contributing to the recent slowdown in global warming, according to a new study.

You can't catch attention deficit hyperactivity disorder (ADHD) but you wouldn't know that by the way diagnoses are spreading - up 10X in some countries.