Excerpt : Ninety-nine percent of the world's digital communications rely on subsea cables. When they break, it could spell disaster for a whole country's internet. How do you fix a fault at the bottom of the ocean? ... There are 1.4 million km (870,000 miles) of telecommunication cables on the seafloor, covering every ocean on the planet. Laid end to end, these cables would span the diameter of the Sun, and are responsible for the transfer of 99% of all digital data. But for something so important, they are surprisingly slender – often little more than 2cm in diameter, or about the width of a hosepipe.
A CURATED COLLECTION OF SCIENCE FACTS AND DELICIOUS FICTIONS !
Showing posts with label BBC News. Show all posts
Showing posts with label BBC News. Show all posts
1/28/14
17 YEAR STUDY ON FEMALE LEMON SHARKS - BAHAMA NESTING GROUND
BBC SCIENCE : LEMON SHARKS GO HOME TO REPRODUCE
"In the study, scientists tracked lemon sharks in the Bahamas for 17 years to prove the case.
Even though this species is highly migratory, pregnant females prefer to give birth where they themselves were born.
The researchers say it strengthens the argument for restrictions on fishing at specific sites.
The idea of females returning to their own place of birth to reproduce has been observed in a number of marine species most notably in salmon but it has also been seen in sea turtles.
"In the study, scientists tracked lemon sharks in the Bahamas for 17 years to prove the case.
Even though this species is highly migratory, pregnant females prefer to give birth where they themselves were born.
The researchers say it strengthens the argument for restrictions on fishing at specific sites.
The idea of females returning to their own place of birth to reproduce has been observed in a number of marine species most notably in salmon but it has also been seen in sea turtles.
In this new work, researchers looked at lemon sharks in
their largest nursery area around the Bimini Islands in the Bahamas."
8/15/13
COELACANTH GENOME SEQUENCED :
BBC NEWS : LIVING FOSSIL FISH GENOME SEQUENCED - COELACANTH link to article by Rebecca Morelle, Science reporter, BBC World Service
"Researchers sequenced the genome of the coelacanth: a deep-sea fish that closely resembles its ancestors, which lived at least 300 million years ago....It had been suggested that this fish was closely related to early tetrapods - the first creatures to drag themselves out of the ocean, giving rise to life on land."
"Researchers sequenced the genome of the coelacanth: a deep-sea fish that closely resembles its ancestors, which lived at least 300 million years ago....It had been suggested that this fish was closely related to early tetrapods - the first creatures to drag themselves out of the ocean, giving rise to life on land."
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