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How Can Marine Turtles Always Return to the Same Sex Beach?


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Why Some Bacteria Are Magnetic?

Researchers at the Naval Research Laboratory (NRL) and Purdue University have tried to decode the cause of the natural magnetism found in some bacteria. The magnetic bacteria live in ponds and lakes bellow the surface, in environments with low supply of oxygen. In fact, they are inhibited by high amounts of oxygen. T...

23 October 2006
08:49 GMT

Bats Use Earth's Magnetic Field for Navigation

Bats are famous for their ultrasound technique for space orientation while flying in the dark, called echolocation. This is efficient over short ranges and enables bats to locate prey and obstacles. But scientists were puzzled about how bats manage to navigate long distances in the dark.A recent study solved the puzz...

9 December 2006
04:11 GMT

Hydrogen Bonds for New Magnets

Hydrogen is taken in consideration in replacing fuel-like gasoline and other petroleum products and ultimately even in the process of thermonuclear fusion. A team of researchers from the US, the UK and Germany has been the first to make a magnetic material constructed from strongest natural known hydrogen bond. Hydro...

11 December 2006
05:00 GMT

A New Magnetic Chip Increases Computer Storage, Speed and Impedes Data Loss at Power Cuts

Our computers could enter a new era. New 'spintronic' devices could lead to more powerful and permanent data storage chips for computers. A mixed team from the Universities of Bath, Bristol and Leeds has found a way to precisely control the pattern of magnetic fields in thin magnetic films, which can store ...

4 January 2007
06:28 GMT

The First Star with Four Poles Ever Discovered

The American astronomers have found the first space body with more than two poles. The pulsating star inside the Crab Nebula, in the constellation of Taurus, is believed to possess up to four magnetic poles. Neutron stars are the dense remains of massive stars that ended in supernova explosions. Some are called pulsa...

11 January 2007
04:43 GMT

Birds Employ Earth's Magnetic Field for Navigation

Scientists have been long time puzzled by how can birds follow their route during the migration and why pigeons can turn back home from large distances (pigeons are the only domestic birds able to fly, that's why this trait was more obvious on them). The researchers have not known for sure what sense empowers th...

17 February 2007
05:42 GMT

The Sun's South Pole Is Warmer Than Its North Pole

Researchers analyzing data transmitted from the NASA Ulysses spacecraft were confronted with a surprise: the Sun's south pole is warmer than its North Pole.Ulysses is the only spacecraft that has flown over the sun's poles, due to its uniquely-tilted orbit. Its first polar flybys in 1994 and 1995 showed "a ...

21 February 2007
04:06 GMT

New Submarines Use Fish Sensors

Fishes possess a special complex organ, called lateral line, stretching along their flanks, which detects movement and vibration in the surrounding water environment. This organ helps them find prey and avoid predation in murkier waters and guide them for synchronized swimming, obstacle avoidance, and tracking. The b...

22 February 2007
04:56 GMT

The Source of Stelar Magnetism

One of the strangest recent space discoveries is provided by the star named AB Aurigae, situated about 460 light-years away: a strong magnetic field generated from a star that theoretically could not have produced it, according to current theories. Till now, it was believed that strong magnetic fields are generated o...

26 February 2007
06:21 GMT

How Can Marine Turtles Always Return to the Same Sex Beach?

Scientists have been puzzled for long by the ability of the marine turtles to return their entire life to the same beach to depose their eggs. These egg-laying sites can be often located far from the feeding areas and the individuals (both females and males, as they mate in the same area where the females lay their e...

8 March 2007
07:21 GMT




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