viernes, 4 de julio de 2014

ScienceDaily: Strange Science News

ScienceDaily: Strange Science News


Controversial clues of two 'Goldilocks planets' that might support life are proven false

Posted: 03 Jul 2014 11:23 AM PDT

Mysteries about controversial signals from a star considered a prime target in the search for extraterrestrial life now have been solved. The research proves, for the first time, that some of the signals actually are from events inside the star itself, not from the two so-called 'Goldilocks planets,' which were suspected to be just-right for life and orbiting the star at a distance where liquid water potentially could exist. No planets there, just star burps.

Discovery expands search for Earth-like planets: Newly spotted frozen world orbits in a binary star system

Posted: 03 Jul 2014 11:21 AM PDT

A newly discovered planet is expanding astronomers' notions of where Earth-like—and even potentially habitable—planets can form, and how to find them. At twice the mass of Earth, the planet orbits one of the stars in the binary system at almost exactly the same distance from which Earth orbits the sun. However, because the planet's host star is much dimmer than the sun, the planet is much colder thanEarth -- a little colder, in fact, than Jupiter's icy moon Europa.

Flower's bellows organ blasts pollen at bird pollinators

Posted: 03 Jul 2014 09:55 AM PDT

A small tree or shrub found in mountainous Central and South American rainforests has a most unusual relationship with the birds that pollinate its flowers, according to a new study. The plant known as Axinaea offers up its male reproductive organs as a tempting and nutritious food source for the birds. As the birds seize those bulbous stamens with their beaks, they are blasted with pollen by the flowers' complex 'bellows' organs.

With 'biological sunscreen,' mantis shrimp see the reef in a whole different light

Posted: 03 Jul 2014 09:55 AM PDT

In an unexpected discovery, researchers have found that the complex eyes of mantis shrimp are equipped with optics that generate ultraviolet color vision. Mantis shrimp's six UV photoreceptors pick up on different colors within the UV spectrum based on filters made from an ingredient other animals depend on as built-in biological sunscreen, according to new research.

Whales as ecosystem engineers: Recovery from overhunting helping to buffer marine ecosystems from destabilizing stresses

Posted: 03 Jul 2014 07:29 AM PDT

A review of research on whales shows that they have more a powerful influence on the function of oceans, global carbon storage, and the health of commercial fisheries than has been commonly assumed. The continued recovery of great whales from centuries of overhunting may help to buffer marine ecosystems from destabilizing stresses, including climate change, reports a global team of scientists.

More left-handed men are born during the winter: Indirect evidence of a hormonal mechanism

Posted: 03 Jul 2014 07:29 AM PDT

Men born in November, December or January are more likely of being left-handed than during the rest of the year. While the genetic bases of handedness are still under debate, scientists obtained indirect evidence of a hormonal mechanism promoting left-handedness among men.

Groovy giraffes: Distinct bone structures keep these animals upright

Posted: 03 Jul 2014 07:29 AM PDT

Researchers have identified a highly specialized ligament structure that is thought to prevent giraffes' legs from collapsing under the immense weight of these animals.

'Grass-in-the-ear' technique sets new trend in chimp etiquette: Chimpanzees spontaneously copy arbitrary behavior

Posted: 03 Jul 2014 07:26 AM PDT

Chimpanzees are copycats and, in the process, they form new traditions that are often particular to only one specific group of these primates. Such are the findings of an international group of scientists, who waded through over 700 hours of video footage to understand how it came about that one chimpanzee stuck a piece of grass in her ear and started a new trend, and others soon followed suit.

First show off, then take-off: New specimen of Archaeopteryx reveals previously unknown features of the plumage

Posted: 03 Jul 2014 06:19 AM PDT

Paleontologists are currently studying a new specimen of Archaeopteryx, which reveals previously unknown features of the plumage. The initial findings shed light on the original function of feathers and their recruitment for flight.

Blood donations could help reduce the risk of heart disease in shift workers

Posted: 02 Jul 2014 05:38 PM PDT

Researchers have found that jetlag has severe effects on red blood cells, possibly explaining the high incidence of heart disease seen in shift workers. However, these effects can be counterbalanced by fresh, young red blood cells -- making blood donations a potential therapy for shift workers.

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