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- Children's drawings indicate later intelligence, study shows
- More than just X and Y: New genetic basis for sex determination
- How children's brains memorize math facts
- Evolutionary misfit: Misunderstood worm-like fossil finds its place in the Tree of Life
- Fascinating rhythm: Light pulses illuminate a rare black hole
- 8,000-year-old mutation key to human life at high altitudes: Study identifies genetic basis for Tibetan adaptation
- Hubble stirs up galactic soup
- NASA's Chandra Observatory searches for trigger of nearby supernova
- Experts close to perfect in determining truth in interrogations using active question methods
- How Were The Egyptian Pyramids Built?
| Children's drawings indicate later intelligence, study shows Posted: 18 Aug 2014 05:41 PM PDT How 4-year-old children draw pictures of a child is an indicator of intelligence at age 14, according to a new study. The researchers studied 7,752 pairs of identical and non-identical twins and found that the link between drawing and later intelligence was influenced by genes.  |
| More than just X and Y: New genetic basis for sex determination Posted: 18 Aug 2014 12:36 PM PDT Men and women differ in obvious ways, and scientists have long known that genetic differences buried deep within our DNA underlie these distinctions. In the past, most research has focused on understanding how the genes that encode proteins act as sex determinants. But scientists have found that a subset of very small genes encoding short RNA molecules, called microRNAs, also play a key role in differentiating male and female tissues in the fruit fly.  |
| How children's brains memorize math facts Posted: 17 Aug 2014 07:01 PM PDT As children learn basic arithmetic, they gradually switch from solving problems by counting on their fingers to pulling facts from memory. The shift comes more easily for some kids than for others, but no one knows why. Now, new brain-imaging research gives the first evidence drawn from a longitudinal study to explain how the brain reorganizes itself as children learn math facts.  |
| Evolutionary misfit: Misunderstood worm-like fossil finds its place in the Tree of Life Posted: 17 Aug 2014 07:00 PM PDT One of the most bizarre-looking fossils ever found -- a worm-like creature with legs, spikes and a head difficult to distinguish from its tail -- has found its place in the evolutionary tree of life, definitively linking it with a group of modern animals for the first time.  |
| Fascinating rhythm: Light pulses illuminate a rare black hole Posted: 17 Aug 2014 07:00 PM PDT Astronomers have accurately measured -- and thus confirmed the existence of -- a rare intermediate-mass black hole about 400 times the mass of our sun in a galaxy 12 million light years from the Milky Way. The finding uses a technique never applied in this way before, and opens the door to new studies of these mysterious objects.  |
| Posted: 17 Aug 2014 06:58 PM PDT In an environment where others struggle to survive, Tibetans thrive in the thin air of the Tibetan Plateau, with an average elevation of 14,800 feet. A new study is the first to find a genetic cause for the adaptation and demonstrate how it contributes to the Tibetans' ability to live in low oxygen conditions.  |
| Posted: 16 Aug 2014 12:48 PM PDT A new NASA/ESA Hubble Space Telescope image shows a whole host of colorful and differently shaped galaxies; some bright and nearby, some fuzzy, and some so far from us they appear as small specks in the background sky. Together they appear as kind of galactic soup.  |
| NASA's Chandra Observatory searches for trigger of nearby supernova Posted: 16 Aug 2014 12:34 PM PDT New data from NASA's Chandra X-ray Observatory offer a glimpse into the environment of a star before it exploded earlier this year, and insight into what triggered one of the closest supernovas witnessed in decades.  |
| Experts close to perfect in determining truth in interrogations using active question methods Posted: 15 Aug 2014 07:22 AM PDT Determining deception is a tool of the trade for law enforcement. But prior research has shown that lie detecting is a 50/50 shot for experts and non-experts alike. So what exactly can we do to find out the truth? A recent study found that using active questioning of individuals yielded near-perfect results, 97.8 percent, in detecting deception.  |
| How Were The Egyptian Pyramids Built? Posted: 28 Mar 2008 07:43 AM PDT The Aztecs, Mayans and ancient Egyptians were three very different civilizations with one very large similarity: pyramids. However, of these three ancient cultures, the Egyptians set the standard for what most people recognize as classic pyramid design: massive monuments with a square base and four smooth-sided triangular sides, rising to a point. The Aztecs and Mayans built their pyramids with tiered steps and a flat top.  |
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