Researchers used zebrafish to study the effects of knocking out three clock genes, Cry1a, Cry2a, and Per2. They compared wild-type zebrafish with those with single, double, or triple knockout of these..

Among golden-collared manakins, a bird found only in Panama and western Colombia, males emit a particular mating call, the 'chee-poo', to attract females. Researchers explore the role of and..

Cracks in the floating ice tongue of Petermann Glacier in the far northwest reaches of Greenland indicate the pending loss of another large iceberg.

At least 200 species of large animals are decreasing in number and more than 150 are under threat of extinction, according to new research that suggests humans' meat consumption habits are primar..

Prehistoric peasant farmers struggling to put more food on the table fueled the global spread of some of the world's first and most important domesticated grain crops beginning as early as 7,000 ..

Researchers report that a possible cure for addiction may be found by following the pathways of significantly altered dopamine neurons in newborns who were chronically exposed to nicotine in utero.

Our actions are guided by moral values. However, monetary incentives can get in the way of our good intentions. Neuroeconomists have now investigated in which area of the brain conflicts between moral..

A research team designed a study to investigate the role depression symptoms play in an increased risk of death over time. The team also examined the role heart disease and stroke play in the link bet..

Medical marijuana has gained attention in recent years for its potential to relieve pain and short-term anxiety and depression. Now, researchers say some cannabinoid compounds may actually inhibit the..

Adults who notice that they frequently lose their train of thought or often become sidetracked may in fact be displaying earlier symptoms of cerebral small vessel disease, otherwise known as a 's..