Herath takes seven to spin Lanka to comeback win at Galle

Ajinkya Rahane (36) was the only Indian batsman to provide some resistance but he too fell to Herath, edging the wily spinner to home captain Angelo Mathews at slip.

Sri Lanka looked dead and buried on 95-5 on Friday after conceding a first-innings lead of 192 but Dinesh Chandimal's swashbuckling unbeaten 162 allowed them to stage a fightback and set India a victory target of 176.

"What an absolute turnaround it was," home captain Angelo Mathews said at the presentation ceremony. "I thought Chandimal was outstanding. He single-handedly got us a fighting score.

"We were down and out for past three and half days and we had to give it our best shot."

The hosts, who lost their last Test series at home to Pakistan, put immense pressure on India with tight bowling and some smart catches in the first session on Saturday.

India failed to find scoring opportunities, with first-innings centurion Shikhar Dhawan, unbeaten on 13 overninght, taking 36 balls to score his first run in the morning.

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Comet lander still silent, scientists shift focus to drilling

After coming to rest in the shadows when it landed on a comet in November, Philae woke up in June, delighting scientists from the European Space Agency, who came up with plans for several experiments they wanted to run before working up to the most risky one - drilling into the surface.

But with the 100kg washing-machine size lander having been silent for over a month now, those plans have been revised.

"The problem is not power, but communications," Aurelie Moussi from space agency CNES said in a webcast on Thursday. "We have to find something to do in a shorter duration."

She said the priorities were now to get pictures from the surface and also to drill into the surface, which Philae was not able to do when it first landed in November.

Scientists hope that samples from the surface of the comet 67P/Churyumov-Gerasimenko will help show how planets and life are created as the rock and ice that make up comets preserve organic molecules like a time capsule.

The Rosetta spacecraft, which is orbiting the comet and through which communications with Philae are relayed to Earth, has spent two weeks at a different part of the comet.

But since Aug 11, it has been back in an area where it should be able to communicate with Philae.

No contact has been established though and the data from the last communications shows one of the lander's transmitters is broken.

Its two receivers are also not working as they should, Barbara Cozzoni, Philae operations engineer said.

The comet on Thursday passed the closest point to the sun on its orbit, about 185 million kilometres from the sun.

The comet's activity levels have been increasing as it approaches the sun and it's now shedding up to 1,000 kg of dust and enough water to fill two bathtubs every second.

When Rosetta first approached the comet last year, the comet was giving off only about two small glasses of water per second.

Scientists have also observed powerful gas jets, though Cozzoni said it was unlikely that Philae could be pushed off into space by a jet.

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Wikipedia can be misleading, says study

While the edit rate of the acid rain article was less than the edit rate of the evolution and global warming articles, it was significantly higher than the non-controversial topics.
Across the board, politically controversial scientific topics were edited more heavily and viewed more often, the researchers said.
"Wikipedia's global warming entry sees 2-3 editings a day, with more than 100 words altered, while the standard model in physics has around 10 words changed every few weeks," Wilson said.
"The high rate of change observed in politically controversial scientific topics makes it difficult for experts to monitor their accuracy and contribute time-consuming corrections," he said.
"As society turns to Wikipedia for answers, students, educators, and citizens should understand its limitations when researching scientific topics that are politically charged," Likens said.
Wikipedia does employ algorithms to help identify and correct blatantly malicious edits, such as profanity.

However, Likens and Wilson urged users to cast a critical eye on Wikipedia source material, which is found at the bottom of each entry.
The study was published in the journal PLOS ONE.

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