- Spider electro-combs its sticky nano-filaments
- Sugary drinks linked to earlier onset of menstrual periods
- Psychopathic Violent Offenders’ Brains Can’t Understand Punishment
- NASA's Dawn spacecraft captures best-ever view of dwarf planet Ceres
- Stomach acid-powered micromotors get their first test in a living animal
- Asteroid that flew past Earth has moon
- Easter Island mystery: Why did the native culture die out?
- The world's oldest known snake fossils: Rolling back the clock by nearly 70 million years
- Brain region vulnerable to aging is larger in those with longevity gene variant
- Ancient star system reveals Earth-sized planets forming near start of universe
- The origin of life: Labyrinths as crucibles of life
- Using stem cells to grow new hair
Posted: 27 Jan 2015 06:23 PM PST
A spider commonly found in garden centers in Britain is giving fresh insights into how to spin incredibly long and strong fibers just a few nanometers thick. The majority of spiders spin silk threads several micrometers thick but unusually the 'garden centre spider' or 'feather-legged lace weaver' can spin nano-scale filaments. Now scientists think they are closer to understanding how this is done.
Posted: 27 Jan 2015 06:22 PM PST
Girls who frequently consume sugary drinks tend to start their menstrual periods earlier than girls who do not, according to new research. The findings are important not only because of the growing problem of childhood obesity in a number of developed countries, but also because starting periods earlier is linked to an increased risk of breast cancer later in life.
Posted: 27 Jan 2015 06:21 PM PST
Posted: 27 Jan 2015 11:11 AM PST
Posted: 27 Jan 2015 11:08 AM PST
Researchers have shown that a micromotor fueled by stomach acid can take a bubble-powered ride inside a mouse. These tiny motors, each about one-fifth the width of a human hair, may someday offer a safer and more efficient way to deliver drugs or diagnose tumors. The experiment is the first to show that these micromotors can operate safely in a living animal.
Posted: 27 Jan 2015 11:06 AM PST
Scientists working with NASA's 230-foot-wide (70-meter) Deep Space Network antenna at Goldstone, California, have released the first radar images of asteroid 2004 BL86. The images show the asteroid, which made its closest approach on Jan. 26, 2015 at 8:19 a.m. PST (11:19 a.m. EST) at a distance of about 745,000 miles (1.2 million kilometers, or 3.1 times the distance from Earth to the moon), has its own small moon.
Posted: 27 Jan 2015 10:11 AM PST
Long before the Europeans arrived on Easter Island in 1722, the native Polynesian culture known as Rapa Nui showed signs of demographic decline. However, the catalyst has long been debated in the scientific community. Was environmental degradation the cause, or could a political revolution or an epidemic of disease be to blame? A collaborative study suggests that the island's native culture reacted to natural environmental barriers to producing sufficient crops.
Posted: 27 Jan 2015 09:24 AM PST
Posted: 27 Jan 2015 09:11 AM PST
Posted: 27 Jan 2015 08:14 AM PST
A Sun-like star with orbiting planets, dating back to the dawn of the Galaxy, has been discovered by an international team of astronomers. At 11.2 billion years old, it is the oldest star with Earth-sized planets ever found and proves that such planets have formed throughout the history of the Universe.
Posted: 27 Jan 2015 08:11 AM PST
Posted: 27 Jan 2015 06:59 AM PST
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