Spiky filaments at the head of sperm cells may lash together, effectively allowing the swimming cells to harpoon an egg to facilitate fertilization. The new find could be a revelation in a fundamental process of life that is 14 years in the making.
Engineers have developed a mouth guard that can monitor health markers, such as lactate, cortisol and uric acid, in saliva and transmit the information wirelessly to a smart phone, laptop or tablet. The technology, which is at a proof-of-concept stage, could be used to monitor patients continuously without invasive procedures, as well as to monitor athletes' performance or stress levels in soldiers and pilots.
The careful examination of fossil fragments from Panama has led Smithsonian scientists and colleagues to the discovery of a new genus and species of river dolphin that has been long extinct. The team named it Isthminia panamensis.
Childhood memories of sticky hands from melting ice cream cones could soon become obsolete, thanks to a new food ingredient.
A groundbreaking new study has used advanced genetic sequencing technology to rewrite the history of sheep breeding and trading along the ancient Silk Road — insights that can help contemporary herders in developing countries preserve or recover valuable traits crucial to their food and economic security.
A Koran owned by the University of Birmingham could be the world’s oldest. Radiocarbon dating places the time of the text to the time of the Prophet Muhammad himself- meaning the holy book is one of the founding documents of Islam – a “treasure of global significance."
Vision researchers have discovered a gene that causes myopia, but only in people who spend a lot of time in childhood reading or doing other “nearwork.”
A Siberian laboratory has opened with the goal of cloning extinct species found with frozen and preserved DNA, according to a Russian magazine. The Mammoth Museum Institute of Applied Ecology, at the North-Eastern Federal University in Yakutsk, opened in August – and is planning to recreate species from DNA extracted in the extreme cold of the nearby Arctic.
Older populations are scoring better on cognitive tests than people of the same age did in the past--a trend that could be linked to higher education rates and increased use of technology in our daily lives. At the same time, however, the study showed that average physical health of the older population has declined.
A tiny, wireless pacemaker could offer some heart patients a surgery-free alternative to the traditional devices, a new study says. Some doctors, however, say there are lingering safety questions and warned patients not to rush to get the new technology.
As many as nine out of 10 of the world's seabirds likely have pieces of plastic in their guts, a new study estimates. Previously, scientists figured about 29 percent of seabirds had swallowed plastic, based on older studies.
One more reason to watch the waistline: New research says people's weight in middle age may influence not just whether they go on to develop Alzheimer's disease, but when. Researchers at the National Institutes of Health took a closer look and reported that being overweight or obese at age 50 may affect the age, years later, when Alzheimer's strikes.
Research into 430,000-year-old fossils collected in northern Spain found that the evolution of the human body's size and shape has gone through four main stages, according to a paper published this week.
Almost half a billion years ago, way before the dinosaurs roamed, Earth's dominant large predator was a sea scorpion that grew to 5 feet 7 inches, with a dozen claw arms sprouting from its head and a spike tail, according to a new study.
President Barack Obama traveled to Alaska yesterday to push change-policies. Part of the agenda involved renaming North America’s tallest mountain. Alaska, stretching up to the Arctic Circle, has been experiencing wildfires, bigger storm surges, glacier melt and some of the quickest shore erosion seen in the world, the president said in his latest weekly address.
Three major hurricanes lined up in the middle of the Pacific Ocean over the weekend. The three Category Four storms Kilo, Ignacio, and Jimena were the first to all be active at that strength during the same time in the Pacific, according to experts.