- First contracting human muscle grown in laboratory
- Feeling cold is contagious, scientists find
- Dinosaurs wiped out rapidly in Europe 66 million years ago
- World's oldest butchering tools gave evolutionary edge to human communication: Oldowan technology behind genesis of language and teaching
- Greenland meltwater contributes to rising sea levels
- Sizing up giants under the sea: Biologists correct inaccuracies for 25 marine species
- People prefer fair, but does the brain?
- Napping helps infants' memory development
- Positive factors in youth linked to better heart health later in life
Posted: 13 Jan 2015 12:40 PM PST
Researchers have grown human skeletal muscle in the laboratory that, for the first time, contracts and responds just like native tissue to external stimuli such as electrical pulses, biochemical signals and pharmaceuticals. The development should soon allow researchers to test new drugs and study diseases in functioning human muscle outside of the human body.
Posted: 13 Jan 2015 11:52 AM PST
Posted: 13 Jan 2015 09:12 AM PST
The well-known theory that an asteroid suddenly killed the dinosaurs is based almost entirely on fossils from North America. A new study shows that dinosaurs -- and other continental vertebrates -- remained diverse in Europe up until the asteroid impact, 66 million years ago. This is strong evidence that dinosaurs and many of their contemporaries went extinct rapidly and simultaneously all across the globe.
Posted: 13 Jan 2015 09:10 AM PST
Two and a half million years ago, our hominin ancestors in the African savanna crafted rocks into shards that could slice apart a dead gazelle, zebra or other game animal. Over the next 700,000 years, this butchering technology spread throughout the continent and, it turns out, came to be a major evolutionary force.
Posted: 13 Jan 2015 08:16 AM PST
Posted: 13 Jan 2015 06:05 AM PST
Posted: 13 Jan 2015 06:04 AM PST
Whether for oneself or for others, fairness is preferred by people, but the brain network changes depending on who is actually benefiting. "In previous studies," explains the lead investigator, "we found the same tendency to reject unfair offers regardless of whether the decision involved the subjects themselves or a third party. Brain imaging, however, suggested that the brain was working differently in the two situations."
Posted: 13 Jan 2015 06:03 AM PST
After studying over 200 young children, researchers have concluded that daytime naps of 30 minutes or more help infants to retain and remember new behaviors, adding that bedtime stories are invaluable for a child's development. Interestingly, the babies showed that they learn best when they are sleepy: "Until now people have presumed that the best time for infants to learn is when they are wide-awake, rather than when they are starting to feel tired, but our results show that activities occurring just before infants have a nap can be particularly valuable and well-remembered," researchers noted.
Posted: 12 Jan 2015 03:11 PM PST
Children with favorable psychosocial experiences may have better cardiovascular health in adulthood, according to new research. Favorable socioeconomic status and self-regulatory behavior, meaning good aggression and impulse control, in youth were the strongest predictors of ideal cardiovascular health in adulthood.
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