In the heart of Canada's Rocky Mountains, an unassuming yet remarkable butterfly has been quietly flying under our scientific ...

In Stephen Brown's collection of about 20,000 butterflies are three new species he discovered while searching the country's ...

That includes butterflies spreading their lovely, colorful wings and making their way to their favorite flowers. Wouldn’t it be awesome to bring them to your garden? Here's how to build your own ...

Almost 50 years ago, computer scientist Douglas Hofstadter predicted that a butterfly would spread its wings in the quantum world. Under the right conditions, tiny electrons in a quantum system ...

Mr. Brown, the Ohio Democrat who lost his race for re-election last year, is forming the Dignity of Work Institute, which will highlight workers’ struggles. By Reid J. Epstein Reporting from ...