Grandmas Made Humans Live Longer
Published: October 24, 2012.
Released by University of Utah
SALT LAKE CITY, Oct. 24, 2012 – Computer simulations provide new mathematical support for the "grandmother hypothesis" – a famous theory that humans evolved longer adult lifespans than apes because grandmothers helped feed their grandchildren.
Full Story »
More news from University of Utah
Calculating How the Pacific Was Settled
SALT LAKE CITY, April 22, 2015 - Using statistics that describe how an infectious disease spreads, a University of Utah anthropologist analyzed different theories of how people first settled islands of the vast Pacific between 3,500 and 900 years ago. Adrian Bell found the two most likely strategies were to travel mostly against prevailing winds and seek easily seen islands, not necessarily the nearest islands.
A Stiff New Layer in Earth's Mantle
SALT LAKE CITY, March 23, 2015 - By crushing minerals between diamonds, a University of Utah study suggests the existence of an unknown layer inside Earth: part of the lower mantle where the rock gets three times stiffer. The discovery may explain a mystery: why slabs of Earth's sinking tectonic plates sometimes stall and thicken 930 miles underground.
The Cost of Dominance
SAVANNAH, Ga., March 19, 2015 - Bad news for relentless power-seekers the likes of Frank Underwood on House of Cards: Climbing the ladder of social status through aggressive, competitive striving might shorten your life as a result of increased vulnerability to cardiovascular disease. That's according to new research by psychologist Timothy W. Smith and colleagues at the University of Utah. And good news for successful types who are friendlier: Attaining higher social status as the result of prestige and freely given respect may
Uncovering the Secrets of Super Solar Power Perovskites
SALT LAKE CITY, March 16, 2015 - The best hope for cheap, super-efficient solar power is a remarkable family of crystalline materials called hybrid perovskites. In just five years of development, hybrid perovskite solar cells have attained power conversion efficiencies that took decades to achieve with the top-performing conventional materials used to generate electricity from sunlight.
New Filter Could Advance Terahertz Data Transmission
Salt Lake City, Feb. 27, 2015 - University of Utah engineers have discovered a new approach for designing filters capable of separating different frequencies in the terahertz spectrum, the next generation of communications bandwidth that could allow cellphone users and Internet surfers to download data a thousand times faster than today. Once the filter is designed, it can be fabricated using an off-the-shelf inkjet printer.
Better Catalysts, Made-to-order
SALT LAKE CITY, Feb. 11, 2015 - Most of our food, medicine, fuel, plastics and synthetic fibers wouldn't exist without catalysts, materials that open favorable pathways for chemical reactions to run forth. And yet chemists don't fully understand how most catalysts work, and developing new catalysts often still depends on laborious trial-and-error.
Shade Coffee Is for the Birds
SALT LAKE CITY, Feb. 5, 2015 - The conservation value of growing coffee under trees instead of on open farms is well known, but hasn't been studied much in Africa. So a University of Utah-led research team studied birds in the Ethiopian home of Arabica coffee and found that "shade coffee" farms are good for birds, but some species do best in forest.
Predatory Sea Snails Produce Weaponized Insulin
SALT LAKE CITY, Jan. 16, 2015 - As predators go, cone snails are slow-moving and lack the typical fighting parts. They've made up for it by producing a vast array of fast-acting toxins that target the nervous systems of prey. A new study reveals that some cone snails add a weaponized form of insulin to the venom cocktail they use to disable fish.