Contrary to previous belief, blind cave fish have the genes to build eyes but turn them off during development, reports Science Now. When a body part is no longer needed, scientists usually assume that mutations accumulate in the genes controlling the structure, eventually preventing it from working or being made. “That was the dogma,” says Stephen Ekker of the University of Minnesota, Twin Cities. But because the cave fish eyes are actively killed, natural selection is probably doing its thing, says Jeffery. And that, he adds, might come as a surprise even to Darwin, who thought the cave fishes’ loss of sight might be an exception to the rules of natural selection. The next step, of course, will be to figure out what the fish gain by losing their sight.So it’s not simply an issue of “use it or lose it,” the article states; “new research suggests that for some cave-dwelling fishes, blindness results from the careful coordination of gene expression, not simply from lack of use.” Science News also reported this story, describing how the researchers could induce blindness in sighted fish by controlling the expression of a gene, and could partially restore sight in blind fish with different gene regulation. The article ends, “Because the genes orchestrate both mouth and eye development, the blind fish may have lost their eyes as t hey gained a more effective mouth—a useful feature for catching food in the dark.”Creationists have argued that natural selection eliminates things, rather than constructing them, so this is no surprise. What is surprising is that the eyes did not merely degenerate through disuse, and that the response could have occurred quickly through changes in the regulation of one gene during development. Maybe there is a functional reason why this gene is being switched off in the darkness of the cave environment. Maybe with eyes not in the way, it helps enhance the other senses the fish will need when sight is not possible. Whatever the reason, natural selection cannot be credited with creating new function, because both eyes and mouths already functioned well. (Visited 37 times, 1 visits today)FacebookTwitterPinterestSave分享0
ShipwrecksThe gurgling waters of the Credit River in Ontario, Canada tell a story of seafaring disaster. Nearly every 1/10th of a mile those floating the lazy waterway unlock the story of a shipwreck. That’s if they know the secret. The stories of more than 140 shipwrecks are recorded in geocache after geocache.Tubing the Credit RiverKeith Watson (username Keith Watson) and a crew of more than a dozen geocaching friends hid the geocaches. But their original intent was a walking tour, not floating the river in a tube or canoe. Keith says, “At the beginning of the summer a few of us decided to start placing caches along a local river. The plan was to walk down the river placing caches and others would have to walk down the river as well to find them. After walking down the first section we decided that walking down a river sucked and we would use tubes to do the next section. After using tubes to do the next section was a blast and we decided that was the best way to do it.”The team used technology and old tales from the sea to make the string of geocaches more inviting. It’s an age-old recipe for geocaches: history + discovery + adventure. Check out this interactive map of the Credit River – Shipwreck Series the team created to help people navigate to river and unlock seven seas of history.The Shipwreck series went live over the summer. It started small, Keith says, “Cachers are going out in groups floating down the Credit River having fun. I have taken my son a few times and he loves it.” Testimonials and videos started turning up, like, “This was probably one of the best caching days I have ever had, and I can’t wait to do more.” And, “You’ve created a unique caching experience that I really don’t think can be found anywhere!” And, “Thanks to all of the COs s[cache owners] for placing this fun-filled series of caches.”Keith says he and the other geocache owners were blown away, “The extent of the series has surpassed in size and popularity far beyond what we thought it would be.”If you’re in Ontario during months warm enough to float a river, you too, can enjoy a river float with a side of history, that didn’t float.Check out one of the videos from the river float: Share with your Friends:More SharePrint RelatedColumbus RiverWalk GeoTourAugust 7, 2015In “GeoTours”Lamanai High (GC19505) – GEOCACHE OF THE WEEK – January 10, 2013January 9, 2013In “Community”Cool caches in Canada, according to Signal the Frog®May 30, 2017With 14 comments
Salman Khan is on the brink of completing a silver jubilee in Bollywood, and actress Kareena Kapoor says the industry is incomplete without him.”I think we all are big fans of Salman and he has been my and Karisma’s (Kapoor) co-star. I am really happy with his 25 years because this industry is incomplete without Salman,” the 31-year-old said here.The actress, who is awaiting the release of her film Heroine spoke on the sidelines of a special shoot for comedy TV show “Taarak Mehta Ka Ooltah Chashmah”.About her appearance on the show, Kareena said: “I think it’s the number one TV show, so we are happy that we could promote our film ‘Heroine’ on such a popular stage.”The serial’s most popular character, Daya Jethalal Gada, essayed by actress Disha Vakani, made Kareena do the garba. Kareena, who has danced to Halkat jawaani in the film was quite a sport.”All of them are quite halkat so we danced on ‘Halkat jawaani’ and the show has got that spirit. I also did the garba and Punjabi dance and I also made them dance to my song. So the concept has been well-woven in the script,” Kareena said.Directed by Madhur Bhandarkar, Heroine hits theatres this Friday and also stars Arjun Rampal and Randeep Hooda.
2/2 Gujrat Lions players celebrate Delhi Daredevils captain Karun Nair’s wicket during an IPL Match against Delhi Daredevils at Ferozshah Kotla in New Delhi on Thursday. – PTI COMMENT Earlier, Suresh Raina and Dinesh Karthik smashed scintillating half-centuries to power Gujarat Lions to an imposing 208-7 at the Feroz Shah Kotla stadium here. SHARE Delhi Daredevils batsman Rishabh Pant being congratulated by Sanju Samson after his fifty during an IPL Match against Gujrat Lions at Ferozshah Kotla in New Delhi on Thursday. – PTI Skipper Raina led from the front with a 43-ball 77, studded withn five boundaries and four sixes, while Karthik blasted 5 fours and 5 sixes in his 34-ball 65-run innings after invited to bat. May 04, 2017 For Delhi, Kagiso Rabada (2/28) and Pat Cummings (2/30) took two wickets, while Corey Anderson (1/22) snapped one to contribute for their team. COMMENTS × The 19-yearold Pant butchered the Lions bowling attack with some power hitting, blasting six fours and nine sixes in his match-winning innings. Gujrat Lions players celebrate Delhi Daredevils captain Karun Nair’s wicket during an IPL Match against Delhi Daredevils at Ferozshah Kotla in New Delhi on Thursday. – PTI The wicket-keeper batsman from Uttarakhand forged a 143-run partnership off 63 balls for the second wicket with Sanju Samson (61 off 31 balls) to take Daredevils on the threshold of victory. SHARE SHARE EMAIL Young Rishabh Pant produced a sensational 43-ball 97 to guide Delhi Daredevils to a comfortable seven-wicket win over Gujarat Lions to keep their IPL play-off hopes alive, here today. IPL 2017 Delhi Daredevils batsman Rishabh Pant being congratulated by Sanju Samson after his fifty during an IPL Match against Gujrat Lions at Ferozshah Kotla in New Delhi on Thursday. – PTI Published on Delhi are now placed at the sixth place in points table with eight points, while Gujarat are out of reckoning after suffering another defeat. They are now at the seventh spot with six points with three more matches to go in their IPL campaign. After they departed, Shreyas Iyer (14) and Corey Anderson (18) took Delhi home with 15 balls to spare to ignite hopes of grabbing a berth at the IPL play-off. 1/2 Raina and Karthik shared a 133-run stand for the third wicket in 72 balls to resurrect their team after being reduced to 10-2 in 1.2 overs early on. cricket
Whatever you might have heard, Facebook doesn’t listen in on everything you do through the microphone on your phone, mining the information for clues on what ads to send you. Citation: No, Facebook doesn’t secretly listen via your microphone to target ads at you (2018, April 12) retrieved 18 July 2019 from https://phys.org/news/2018-04-facebook-doesnt-secretly-microphone-ads.html “No,” CEO Mark Zuckerberg told members of Congress on Tuesday, addressing a conspiracy theory that doesn’t seem to want to die.The theory has been floating around since at least 2016. It posits that Facebook surreptitiously records audio using the microphones on users’ smart phones, then uses voice recognition software to turn it into searchable terms that the site can use to place ads in the user’s news feed.An example would be if someone were discussing lawn mowers near their phone, then suddenly started seeing lawn mower ads in their Facebook news feed.Facebook addressed the rumor in June 2016 in a post, saying this:”Facebook does not use your phone’s microphone to inform ads or to change what you see in News Feed. Some recent articles have suggested that we must be listening to people’s conversations in order to show them relevant ads. This is not true. We show ads based on people’s interests and other profile information—not what you’re talking out loud about.”However, the rumor isn’t going away. In a hearing before Congress on the Cambridge Analytica scandal Tuesday, Sen. Gary Peters of Michigan asked Zuckerberg, “Yes or no, does Facebook use audio obtained from mobile devices to enrich personal information about users?””No,” Zuckerberg responded.He continued, “Senator, let me get clear on this, you’re talking about this conspiracy theory that gets passed around that we listen to what’s going on on your microphone and use that for ads. To be clear, we do allow people to take videos on their devices and share those, and videos have audio, so we do while you’re taking a video, record that and use that to make the service is better by making sure your videos have audio, but I think that is pretty clear. But I just wanted to make sure I was exhaustive there.”For those who might still be concerned, a simple solution is to go into phone settings and turn off the permissions that allow the Facebook app to access the microphone. Note that this will make it impossible to record live videos with sound on Facebook, so you’ll need to turn it back on should you want to do so.Instructions on cutting the link:For iPhone users, go to Settings >> Privacy >> Microphone >> look for Facebook, then toggle off the setting that allows the Facebook app to access the microphone.For recent Android versions go to Settings >> Apps >> Facebook >> Permissions, then toggle off the setting that allows the Facebook app to access the microphone. ©2018 USA Today Distributed by Tribune Content Agency, LLC. What to do if Facebook says your info was used by Cambridge Analytica Explore further This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.