Why does a Caribbean angelfish sometimes resemble its Indo-Pacific cousin, even though they have never lived in the same ocean? Why do coral reefs harbor such a wide range of stripes, spots and ...

Scientists have discovered a new species of chiton, an ancient marine mollusk that has remained virtually unchanged for the ...

Researchers at the University of California San Diego and the Veterans Affairs San Diego Healthcare System have identified a distinct biological pattern of chronic rhinosinusitis (CRS), a chronic ...

You never know who will cross your path, or why, but the universe decides when it's time. This is mostly true when it comes to the cat distribution system, and whether we like it or not, these kitties ...

The vast collection of unique weapons in Fallout: New Vegas includes every one-of-a-kind gun and melee weapon. As enhanced versions of the game's regular weapons, they're usually better at killing ...

Researchers led by Aurore Perrault at Concordia University, Canada and Valeria Kebets at McGill University, Canada, have used a complex data-driven analysis to uncover relationships among multiple ...

In Mendelian inheritance patterns, you receive one version of a gene, called an allele, from each parent. These alleles can be dominant or recessive. Non-Mendelian genetics don’t completely follow ...

This media is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this work without contacting the Smithsonian. For more ...

“All happy families are alike; each unhappy family is unhappy in its own way.” This is the first line of Leo Tolstoy’s novel Anna Karenina, and it may hold a kernel of truth that goes beyond family ...