Worker bees, wasps, and ants are often considered neuter. But in many species they are females with ovaries, who although unable to mate, can lay unfertilized eggs which turn into males if reared.

The function of horned beetles' wild protrusions has been a matter of some consternation for biologists. Digging seemed plausible; combat and mate selection, more likely. Even Charles Darwin once weighed in on the matter, suggesting -- one imagines with some frustration -- the horns were merely ornamental.

Sex is a boon to evolution; it allows genetic material from parents to recombine, giving rise to a unique new genome. But how did sex itself evolve" Researchers at the Department of Energy's Lawrence Berkeley National Laboratory and the University of California at Berkeley have found clues to one part of this complex question in ongoing studies of the nematode Caenorhabditis elegans.

Hydrogen-powered cars that do not pollute the environment are a step closer thanks to a new discovery which promises to solve the main problem holding back the technology.

By sampling different ocean locations for the presence of an elusive but critical group of algae, researchers have gained new insight into the dwelling places of the symbiotic organisms that reef corals need for survival.

Investigators have revealed that coral reef shark populations are in the midst of rapid decline, and that no-take zones reefs where fishing is prohibited do protect sharks, but only when compliance with no-take regulations is high.

By studying the songs of a bird species that has succeeded in adapting to urban life, researchers have gained insight into the kinds of environmental pressures that influence where particular songbirds thrive, and the specific attributes of city birds that allow them to adjust to noisy urban environments.

Cut off from world energy markets, Armenia is making a virtue of adversity and may be leading the world in using cleaner car fuel, officials say. While the European Union is looking at 2020 before 10 percent of vehicles there will use alternative fuel, in Armenia up to 30 percent of cars already run on clean compressed gas, officials here say.

Medium-sized polyps yield significant number of advanced adenomas and cancer

Connect one pendulum to another with a spring, and in time the motions of the two swinging levers will become coordinated

Scientists have combined two molecules that occur naturally in blood to engineer a molecular complex that uses solar energy to split water into hydrogen and oxygen, says research published today in the Journal of the American Chemical Society.

ESA's Envisat satellite and the Japan Aerospace Exploration Agency's (JAXA) data relay test satellite Kodama have successfully completed an interoperability test demonstrating that scientific data from Envisat can be transmitted to Kodama and from there transmitted to the Japanese ground receiving station in Tsukuba.