Balancing fertility and child survival in the developing world
Children in smaller families are only slightly more likely to survive childhood in high mortality environments, according to a new study of mothers and children in sub-Saharan Africa seeking to understand why women, even ...
Research suggests cells communicate via biophotons
Why humans choose running over walking
Other than Olympic race walkers, people generally find it more comfortable to run than walk when they start moving at around 2 meters per second about 4.5 miles per hour.
Researchers propose 'whole-system redesign' of US agriculture
Transformative changes in markets, policy and science, rather than just incremental changes in farming practices and technology, will be critical if the United States is to achieve long-term sustainability in agriculture, ...
Attractive men have long... ring fingers: study
The longer a man's fourth or ring finger is compared to his index finger, the more likely he is to be judged attractive by women, according to a study released Wednesday.
Disease burden links ecology to economic growth
A new study, published December 27 in the open access journal PLOS Biology, finds that vector-borne and parasitic diseases have substantial effects on economic development across the globe, and are major drivers of differ ...
Testosterone low, but responsive to competition, in Amazonian tribe
(PhysOrg.com) -- It's a rough life for the Tsimane, an isolated indigenous group in Bolivia. They make a living by hunting and foraging in forests, fishing in streams and clearing land by hand to grow crops. ...
Can newly discovered biology 'law' save lives?
What if doctors in the intensive care unit could predict if and when a patient was about to go into cardiac arrest? They could then be ready when it happened.
Human cells, plants, worms and frogs share mechanism for organ placement
As organisms develop, their internal organs arrange in a consistent asymmetrical pattern--heart and stomach to the left, liver and appendix to the right. But how does this happen?
Veterinary vaccines found to combine into new viruses, prompting regulatory response
Research from the University of Melbourne has shown that two different vaccine viruses- used simultaneously to control the same condition in chickens- have combined to produce new infectious viruses, prompting ...
DNA sleuth hunts wine roots in Anatolia
There are easier places to make wine than the spectacular, desolate landscapes of southeast Turkey, but DNA analysis suggests it is here that Stone Age farmers first domesticated the wine grape.
Fine hands, fists of fury: Our hands evolved for punching, not just dexterity
(Phys.org)—Men whacked punching bags for a University of Utah study that suggests human hands evolved not only for the manual dexterity needed to use tools, play a violin or paint a work of art, but so ...
Brain control? Shining light on pupil constriction
(PhysOrg.com) -- Youve seen it on television: A doctor shines a bright light into an unconscious patients eye to check for brain death. If the pupil constricts, the brain is OK, because in mammals, ...
Vertebrates share ancient neural circuitry for complex social behaviors: study
Humans, fish and frogs share neural circuits responsible for a diversity of social behavior, from flashy mating displays to aggression and monogamy, that have existed for more than 450 million years, biologists at The University ...