Efforts on to revive Galapagos tortoises once thought extinct

Updated 18 June 2013
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Efforts on to revive Galapagos tortoises once thought extinct

Scientists will try to revive two species of giant Galapagos tortoises thought to have been extinct by breeding genetic relatives in captivity, experts leading the effort said.
The Galapagos Islands, located 1,000 kilometers (600 miles) off Ecuador’s Pacific coast, are famed for the large number of species that have developed there in isolation.
New research techniques have revealed that at Wolf volcano on Isabela Island, 17 hybrid giant tortoises have been found with genes from the extinct Pinta Island tortoise, and about 280 hybrids have been found with genes from the extinct Floreana Island tortoise.
Among those with Pinta genes, at least one pair has 80 percent of the original species’ genes, while among the Floreana hybrids, many have up to 90 percent of the original species genes.
“That gives us the possibility, literally, of bringing back these species which at the moment are considered extinct,” Galapagos National Park applied sciences chief Washington Tapia told AFP.
Giant tortoises have life spans of up to 180 years, growing to 1.8 meters (five feet nine inches) long and nearly 400 kilograms (880 pounds) in weight.
Last year the body of “Lonesome George,” a giant Galapagos tortoise once believed to be the last of its kind, was sent to New York after its death to be embalmed and then returned home.
A rare Pinta Island giant tortoise discovered in 1971, George was estimated to be a century old when he died June 24, 2012. At the time, he was believed to be the last of his kind.
The Floreana Island tortoise was widely thought to have been extinct for more than 100 years. One of their last sightings was by British naturalist Charles Darwin when he visited the Galapagos in 1835.
Darwin studied the tortoises, which evolved in isolation, as he developed his theory of natural selection.
Now Tapia’s team is eyeing something of reverse natural selection: bringing back to life animals technically considered to have died out.
He said that experts will soon start trying to get pairs in captivity to produce offspring close to their genetic origin. But due to the lengthy lifespan of the animals, Tapia said that he will not live to see the results: true to the slow pace tortoises are famous for, it should take about 120 years to get all the data in.
The female tortoises reach sexual maturity at around 20-25 years, and males at around 25-30. Tapia said that mating a female and male with 80-90 percent Floreana genes should produce offspring with about 95 percent of the genes of the original species.
With the Pintas, “there is a chance, albeit remote, that we could end up with a male being produced with only original-species genes,” Tapia said.
For now, the future of the Floreana lies with about 92 animals born in captivity since 2012. More testing has to be done to determine which have the greatest original-species genetic content so that those males and females can be bred.
Tapia said that one of the main goals is for the tortoises to be released back into their natural habitats as soon as possible, even as hybrids, so that they can help bring the ecosystems of the islands back into balance after they were disturbed by imported species, such as goats.

The Wolf hybrids have a salty story of their own: park officials believe the tortoises were taken to Isabela Island in the 17th and 18th century by pirates who picked them up to eat, but then decided they were no longer needed as a source of meat and tossed them overboard.


Google looking to future after 20 years of search

Updated 24 September 2018
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Google looking to future after 20 years of search

  • Google was launched in September 1998 in a garage rented in the Northern California city of Menlo Park
  • The name is a play on the mathematical term ‘googol,’ which refers to the number 1 followed by 100 zeros

SAN FRANCISCO: Google celebrated its 20th birthday Monday, marking two decades in which it has grown from simply a better way to explore the Internet to a search engine so woven into daily life its name has become a verb.
The company was set to mark its 20th anniversary with an event in San Francisco devoted to the future of online search, promising a few surprise announcements.
Larry Page and Sergey Brin were students at Stanford University — known for its location near Silicon Valley — when they came up with a way to efficiently index and search the Internet.
The duo went beyond simply counting the number of times keywords were used, developing software that took into account factors such as relationships between webpages to help determine where they should rank in search results.
Google was launched in September 1998 in a garage rented in the Northern California city of Menlo Park. The name is a play on the mathematical term “googol,” which refers to the number 1 followed by 100 zeros.
Google reportedly ran for a while on computer servers at Stanford, where a version of the search had been tested.
And Silicon Valley legend has it that Brin and Page offered to sell the company early on for a million dollars or so, but no deal came together.
Google later moved its headquarters to Mountain View, where it remains.
In August 2004, Google went public on the stock market with shares priced at $85. Shares in the multi-billion-dollar company are now trading above $1,000.
Its early code of conduct included a now-legendary “don’t be evil” clause. Its stated mission is to make the world’s information available to anyone.
The company hit a revenue mother lode with tools that target online ads based on what users reveal and let marketers pay only if people clicked on links in advertising.
It has now launched an array of offerings including Maps, Gmail, the Chrome Internet browser, and an Android mobile device operating system that is free to smartphone or tablet makers.
Google also makes premium Pixel smartphones to showcase Android, which dominates the market with handsets made by an array of manufacturers.
Meanwhile, it bought the 18-month-old YouTube video sharing platform in 2006 in a deal valued at $1.65 billion — which seemed astronomical at the time but has proven shrewd as entertainment moved online.
The company also began pumping money into an X Lab devoted to technology “moon shots” such as Internet-linked glasses, self-driving cars, and using high-altitude balloons to provide Internet service in remote locations.
Some of those have evolved into companies, such as the Waymo self-driving car unit. But Google has also seen failures, such as much-maligned Google Glass eyewear.
Elsewhere, the Google+ social network launched to compete with Facebook has seen little meaningful traction.
In October 2015, corporate restructuring saw the creation of parent company Alphabet, making subsidiaries of Google, Waymo, health sciences unit Verily and other properties.
Google is also now a major player in artificial intelligence, its digital assistant infused into smart speakers and more. Its AI rivals include Amazon, Apple and Microsoft.
Despite efforts to diversify its business, Alphabet — which has over 80,000 employees worldwide — still makes most of its money from online ads. Industry tracker eMarketer forecast that Google and Facebook together will capture 57.7 percent US digital ad revenue this year.
In the second quarter of 2018, Google reported profit of $3.2 billion despite a fine of $5.1 billion imposed by the European Union.
Google’s rise put it in the crosshairs of regulators, especially in Europe, due to concerns it may be abusing its domination of online search and advertising as well as smartphone operating software.
There have been worries that Alphabet is more interested in making money from people’s data than it is in safeguarding their privacy.
Google has also been accused of siphoning money and readers away from mainstream news organizations by providing stories in online search results, where it can cash in on ads.
It is among the tech companies being called upon to better guard against the spread of misinformation — and has also been a target of US President Donald Trump, who added his voice to a chorus of Republicans who contend conservative viewpoints are downplayed in search results.