For millennia, malaria has been a major killer of children in Africa and other parts of the world. In doing so, it has been a major force of evolutionary selection on the human genome.
Our mood can affect how we walk— slump-shouldered if we're sad, bouncing along if we're happy. Now, researchers have shown it works the other way too— making people imitate a happy or sad way of walking actually affects their mood.
Astronomers have discovered that our nearest galactic neighbors— the dwarf spheroidal galaxies— are devoid of star-forming gas, and that our Milky Way Galaxy is to blame. New radio observations reveal that within a well-defined boundary around our Galaxy, dwarf galaxies are completely devoid of hydrogen gas; beyond this point, dwarf galaxies are teeming with star-forming material.
West African chimpanzees will search far and wide to find Alchornea hirtella, a spindly shrub whose straight shoots provide the ideal tools to hunt aggressive army ants in an ingenious fashion. The plant provides the animals with two different types of tool, a thicker shoot for digging and a more slender tool for dipping.
Calvin Miller and a team studying in Iceland found that conditions on Earth for the first 500 million years after it formed may have been surprisingly similar to the present day, not a hellscape as thought.
More than 100 years since they were first discovered, some of the world's most bizarre fossils have been identified as distant relatives of humans. The fossils belong to 500-million-year-old blind water creatures. Alien-like in appearance, they were filter-feeders shaped like a figure eight. Their strange anatomy has meant that no one has been able to place them accurately on the tree of life, until now.
On Oct. 16, 1846, American dentist, William T.G. Morton made the first public demonstration of the administration of ether anesthetic, which the patient inhaled from a blown glass flask, during an operation performed by John Collins Warren at Massachusetts General Hospital.
Researchers have designed a family of materials to make LEDs that don’t include rare earths but instead are made out of copper iodide, which is an abundant compound. They tuned them to glow a warm white shade or various other colors using a low-cost solution process.
A new paper posits that the Pleistocene members of the now-extinct family of sthenurine kangaroos were likely bipedal walkers. The scientists make their case based on a rigorous statistical and biomechanical analysis of the bones of sthenurines and other kangaroos past and present.
Short-term modest weight gains in healthy, normal weight young adults was associated with more bad cholesterol levels in those who ate muffins cooked using saturated oil. However, individuals in the same study who ate muffins made with polyunsaturated oils had improved blood cholesterol profiles.
Turning street lights off decreases the number of grounded fledglings, according to a study. Thousands of birds are attracted to lights– sometimes referred to as light-pollution– every year worldwide during their first flights from their nests to the open ocean, a phenomenon called “fallout.”
The EPA has approved a new version of a popular weed killer to be used on genetically modified corn and soybeans. The EPA says that it will allow the use of a 2,4-D weed killer called Enlist Duo.
Collapsible wings may be a bird's answer to turbulence, according to a study in which an eagle carried its own “black box” flight recorder on its back.
Lake Erie has become increasingly susceptible to large blooms of toxin-producing cyanobacteria since 2002, potentially complicating efforts to rein in the problem in the wake of this year's Toledo drinking water crisis.
Facebook and Apple will now give up to $20,000 in benefits to help employees pay for infertility treatments, sperm donors and even to freeze their eggs. The move comes amid stiff competition for skilled engineers, and as many of the biggest firms try to diversify their male-dominated ranks to include and appeal to more women.