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It's no secret that humans are having a huge impact on the life cycles of plants and animals. UC Santa Barbara researchers decided to test that theory by studying the world's far-flung islands. Their research sheds surprising light on the subject of extinction rates of species on islands.

New Hubble and Chandra observations of the cluster known as MACSJ0025.4-1222 indicate that a titanic collision has separated dark from ordinary matter. This provides independent confirmation of a similar effect detected previously in a target dubbed the Bullet Cluster, showing that the Bullet Cluster is not an anomalous case.

Scientists are shedding light on how type-1 diabetes begins. Doctors have known the disease is caused by an autoimmune attack on the pancreas, but the exact trigger of the attack has been unclear. Now, a new study in mice implicates the immune signal interferon-alpha as an early culprit in a chain of events that upend sugar metabolism and make patients dependent on lifelong insulin injections.

Scientists are collecting the spawn of elkhorn corals as part of a research and education project to grow the newborn juvenile corals for distribution to aquaria and to the wild. The goals of the project are to learn how corals will respond to global warming and also to teach aquarium professionals how they can protect corals by using laboratory-raised specimens rather than removing corals from the ocean.

Reducing levels of uric acid in blood lowered blood pressure to normal in most teens in a study designed to investigate a possible link between blood pressure and the chemical, a waste product of the body's normal metabolism.

University of Leicester experts have held discussions with military personnel in Afghanistan following the discovery of new technology to identify fingerprints on metal.

Finnish scientists have identified genes that may predispose to anxiety disorders. Some of the studied genes show a statistical association with specific anxiety disorders.

A 75-million-year-old fossil of a pregnant turtle and a nest of fossilized eggs that were discovered in the badlands of southeastern Alberta are yielding new ideas on the evolution of egg-laying and reproduction in turtles and tortoises.