The speed at which the calcium concentration in the cell changes controls the swimming behavior of sperm. They can calculate the calcium dynamics and react accordingly.

(AP) -- With the story of alleged invasion of privacy and bias intimidation already told, prosecutors have turned to trying to show jurors that a former Rutgers University student accused of using a webcam to spy on his roommate's intimate encounter with another man tried to cover up his actions.

(PhysOrg.com) -- NASA's Gravity Recovery And Interior Laboratory (GRAIL) spacecraft orbiting the moon officially have begun their science collection phase. During the next 84 days, scientists will obtain a high-resolution map of the lunar gravitational field to learn about the moon's internal structure and composition in unprecedented detail. The data also will provide a better understanding of...

Researchers at the University of Liverpool have found that that the opinions of young people in Argentina towards the Falklands/Malvinas Islands are varied and influenced by a number of factors including geographical location, family history and their views on domestic politics.

Physicists hunting for the elusive Higgs boson at an American accelerator have come up with similar findings to researchers Large Hadron Collider in Europe.

An impressive solar flare erupted Tuesday and should start hitting the Earth late Wednesday, potentially disrupting power grids, GPS and airplane flights.

Biologists discovered Eurasian Roller nestlings vomit on themselves to discourage predators and alert parents.

Every U.S. manufactured good sold overseas or iPad shipped from China makes one of 500 million journeys aboard ship containers crossing the world's oceans each year — a journey that ends at deep-water ports capable of docking and offloading the world's biggest cargo ships. Now a U.S. entrepreneur wants to give every city or town an instant seaport with his vision for robot cranes floating in the...

Nigeria faces an uphill battle in removing fuel subsidies that kept gasoline  cheap, but critically hampered the country's development.

Our nation's cities appear to be fat, according to a new Gallup-Healthways poll, which found that at least 15 percent of residents in 187 of the 190 metro areas surveyed are obese.

Shoppers aren't always happy about lower prices – especially when they come after higher ones.

An impressive solar flare is heading toward Earth and could disrupt power grids, satellite navigating systems and airplane...

Apple's tightly regulated iOs and Google's wide open Android operating systems offer a lot of different features for mobile users.

After another study said that a compound in cola is linked to cancer, the soft drink giant says it will modify its recipe.

For a mix of economic and environmental reasons, opponents line up against a proposal to deepen the waterway to accommodate bigger ships.

If there is life on other planets, a laser frequency comb may help find it. Such a comb -- a tool for precisely measuring frequencies, or colors, of light -- has for the first time been used to calibrate measurements of starlight from stars other than the Sun. The good results suggest combs will eventually fulfill their potential to boost the search for Earth-like planets to a new...

In recent years, scientists have begun to harness DNA's powerful molecular machinery to build artificial structures at the nanoscale using the natural ability of pairs of DNA molecules to assemble into complex structures. While most researchers of "DNA origami" are working to demonstrate what's possible, scientists are now seeking to determine what's...

Stuck solving a problem? Seek the obscure, says a psychologist. "There's a classic obstacle to innovation called 'functional fixedness,' which is the tendency to fixate on the common use of an object or its parts. It hinders people from solving problems." Researchers have developed a systematic way of overcoming that obstacle: the "generic parts...

Words spelled with more letters on the right of the keyboard are associated with more positive emotions than words spelled with more letters on the left, according to new research by cognitive scientists. Their work shows, for the first time, that there is a link between the meaning of words and the way they are typed -- a relationship they call the QWERTY...

Physicists have shown that wealth concentration invariably stems from a particular type of market exchange rules -- where agents cannot receive more income than their own capital. The authors concluded that maximum inequalities ensue from free markets, which are governed by such seemingly fair...

An inexpensive new medical sensor has the potential to simplify the diagnosis of diseases ranging from life-threatening immune deficiencies to the common cold, according to its inventors.

The annual shift to daylight saving time and its accompanying loss of sleep cause employees to spend more time than normal surfing the Web for content unrelated to their work, resulting in potentially massive productivity losses, according to researchers.

Researchers have developed the first functional oxide thin films that can be used efficiently in electronics, making new high-power devices and sensors possible. This is the first time researchers have been able to produce positively-charged and negatively-charged conduction in a single oxide material, launching a new era in oxide...