Tuesday, July 9, 2013

How hawkmoths jam the sonar signals from bats

Hawkmoths are now the second known species of moths that have found a way to jam bat sonar. Moths have evolved other defense mechanisms to detect and avoid bats.

By David Clark Scott,?Staff writer / July 4, 2013

Scientists have discovered how hawkmoths are able to jam the sonar of bats to prevent being eaten by the nocturnal predator.

Photo courtsey Boise State University

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In the dark caves and jungles of the world, there's an epic 65-million-year evolutionary battle going on between bats and moths.

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Moths are obviously the underdogs. But scientists are learning that moths have found ingenious ways to counter the weapons of the bat.

The latest discovery is that the hawkmoths may be jamming the sonar signals bats use to track and catch moths in flight. How do they do it?

According to an article in Nature, behavioral ecologist Jesse Barber of Boise State University in Idaho and phylogeneticist Akito Kawahara of the University of Florida in Gainesville went to Borneo to study how hawkmoths defend themselves.

"When the researchers played bat ultrasound to the hawkmoths, they found that three species (Cechenena lineosa, Theretra boisduvalii and Theretra nessus) they had captured emitted ultrasound clicks in response. The males did so by rapidly grating stiff scales on the outer surface of their 'claspers' ? structures normally used to grab females during mating ? against part of the abdomen, the researchers report. Females also seem to pull part of their genitalia inwards so that genital scales rub against their abdomens."

This is the second species of moth known to man to find a way to jam the echolocation system employed by bats.

In a 2009 article in the Scientific American, Aaron Corcoran, a biology PhD student at Wake Forest University and the lead author of the paper about how tiger moths jam bat sonar, described how scientists studied and tested behavior of the Bertholdia trigona against the big brown bat Eptesicus fuscus, using high-speed infrared cameras and an ultrasonic microphone to record the action over nine consecutive nights.

Source: http://rss.csmonitor.com/~r/feeds/science/~3/5WVgvul_1RM/How-hawkmoths-jam-the-sonar-signals-from-bats

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Tuesday, May 21, 2013

Don't wear socks, hot Pakistanis told amid power crisis

ISLAMABAD (Reuters) - Pakistan has told civil servants not to wear socks as the country turns off air-conditioners amid a chronic power crisis and soaring temperatures.

The government has turned off all air-conditioning in its offices as the country endures blackouts of up to 20 hours a day in some places.

"There shall be no more use of air-conditioners in public offices till such time that substantial improvement in the energy situation takes place," a cabinet directive said.

As part of a new dress code, moccasins or sandals must be worn without socks.

The power shortages have sparked violent protests and crippled key industries, costing hundreds of thousands of jobs in a country already beset by high unemployment, a failing economy, widespread poverty and a Taliban insurgency.

The "load-shedding" means many families cannot pump water, let alone run air-conditioners, with a disastrous knock-on effect on health and domestic life.

Frustration over the power cuts contributed to the former ruling party's poor showing in a May 11 general election.

Two ministers in charge of water and power explained what can be done to end power cuts in parts of the country enduring temperatures of 40 degrees Celsius and above - absolutely nothing, it seems, except raise prices.

Ministers Musadiq Malik and Sohail Wajahat Siddiqui "expressed their inability to overcome the crisis", the Daily Times quoted them as telling a news conference in Lahore, where the temperature was 40 C (104 degrees Fahrenheit) on Monday.

"They have termed financial constraints as a major, and incompetence as a minor, hurdle in resolving the issue," the newspaper said.

"Presenting the realistic picture, the ministers announced that they were going to increase the price of electricity and gas for all sectors."

They gave no details but said the problem would get worse before it gets better.

About two-thirds of Pakistan's energy is generated by oil and gas and there are widespread gas shortages, with cars run by CNG, compressed natural gas, queuing up for hours overnight to fill their tanks.

(Reporting by Nick Macfie; Editing by Robert Birsel)

Source: http://news.yahoo.com/pakistan-holds-news-conference-cant-end-power-blackouts-064456087.html

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Monday, May 20, 2013

'Undercover Angel' singer Alan O'Day dies

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Songwriter and singer Alan O'Day, who wrote tunes for such artists as the Righteous Brothers and Helen Reddy, then went on to land his own No. 1 hit in 1977, died at his home in Westwood, Calif. He was 72.

His label, 1st Phase Records, reported his death from cancer on Friday.

"Alan continued to write and perform until his last days," said a statement from the record company. "Alan was a generous man who gave his heart and soul to the music industry."

O'Day first signed with Warner Bros. in 1971 and wrote "Train of Thought" for Cher, "Rock and Roll Heaven" for the Righteous Brothers, and the No. 1 single "Angie Baby" in 1974 for Helen Reddy. Three years after that, he also topped the charts with his own single, "Undercover Angel."

In the next decade he paired with Janis Liebhart to share writing credits on many songs for the "Muppet Babies" cartoons. During his career, his songs were performed by other artists, including Tom Jones, Dusty Springfield and Tony Orlando.

The Hollywood Reporter quoted a statement from O'Day's friend and fellow songwriter Diane Warren: "My dear dear friend and mentor Alan O'Day has passed away. 'If you believe in forever, then life is just a one-night stand. If there's a rock and roll heaven, well you know they've got one hell of a band.' (From Alan's song 'Rock And Roll Heaven'). Well the band just got better. Rest in peace my friend."

He is survived by his wife, Yuka.

Source: http://www.today.com/entertainment/angie-baby-songwriter-undercover-angel-singer-alan-oday-dies-1C9992098

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Affymetrix CFO Barabe to retire in June

SANTA CLARA, Calif. (AP) -- Affymetrix Chief Financial Officer Tim Barabe is planning to retire from his post next month.

The genetic testing instrument business said Monday that it is promoting Gavin Wood to the position. Barabe's retirement is effective June 28.

Wood will be responsible for Affymetrix's finance, accounting, information technology, facilities and investor relations functions.

Wood, who has worked for Affymetrix Inc. since 2006, most recently served as vice president of finance, international controller. He will report to CEO Frank Witney.

Affymetrix is based in Santa Clara, Calif. Its shares finished at $3.69 in Friday. Its shares have traded in a 52-week range of $2.96 to $5.50.

Source: http://news.yahoo.com/affymetrix-cfo-barabe-retire-june-102937943.html

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Ever 'hack your body?' Chat with author Dave Asprey

Founded in 1994, Amazon.com has steadily grown into one of the most popular online retailers in the world. In 2012, Amazon hit $61 billion in sales, according to InternetRetailer.com's Top 500 list. As the company continues to grow, consumers have looked far and wide to score significant deals on the website. Here are five of the best ways to save money on Amazon purchases:

Source: http://news.yahoo.com/chat-live-with-rewnowned-biohackers-about--hacking-your-body--at-2-00pm-144851209.html

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Sunday, May 12, 2013

Car bombs kill 20 in Turkish town near Syrian border

By Ece Toksabay

ISTANBUL (Reuters) - Twin car bombs killed at least 20 people near Turkey's border with Syria on Saturday, increasing fears that Syria's civil war was dragging in neighbors and drawing a swift warning from Ankara not to test its resolve.

Turkey supports the uprising against Syrian President Bashar al-Assad and Turkish Foreign Minister Ahmet Davutoglu said it was no coincidence the attacks in the town of Reyhanli came as diplomatic moves to end the conflict intensify.

"There may be those who want to sabotage Turkey's peace, but we will not allow that," Davutoglu told reporters during a trip to Berlin. "No-one should attempt to test Turkey's power, our security forces will take all necessary measures."

There was no immediate claim of responsibility.

NATO member Turkey has been one of Assad's harshest critics and has harbored both Syrian refugees and rebels during the uprising against him, now in its third year.

Prospects appeared to improve this week for diplomacy over the civil war, in which more than 70,000 people have been killed, after Moscow and Washington announced a joint effort to bring government and rebels to an international conference.

But a Russian official said on Saturday that there was already disagreement over who would represent the opposition and he doubted whether a meeting could happen this month.

DEATH TOLL MAY RISE

Smoke rose above Reyhanli, which lies in Turkey's southern Hatay province, after the blasts, which occurred close to local administrative buildings.

"We have around 20 dead and 46 people were injured, but we have to note that many of the injuries are severe, which means the death toll could unfortunately rise," Prime Minister Tayyip Erdogan said in comments broadcast on Turkish television.

Erdogan said this week that Turkey would support a U.S.-enforced no-fly zone in Syria and warned that Damascus crossed President Barack Obama's "red line" on chemical weapons use long ago.

A no-fly zone to prohibit Syrian military aircraft from hitting rebel targets has been mentioned by American lawmakers as one option the United States could use to pressure Assad.

Erdogan is due to meet Obama in Washington on May 16.

Violence has spilled over the border before.

In February, a minibus blew up at a border crossing near Reyhanli, killing 14 people and wounding dozens more.

The Syrian opposition said one of its delegations appeared to have been the target of that attack, but there has been no confirmation of this from the Turkish authorities.

In October, five Turkish civilians were killed in Akcakale when a mortar bomb fired from Syria landed on their house, prompting Turkey to fire back across the frontier.

Turkey is sheltering more than 300,000 Syrians, most of them in camps along the 900-km (560-mile) frontier, and is struggling to keep up with the influx.

(Additional reporting by Gulsen Solaker in Berlin and Steve Gutterman in Moscow; Writing by Nick Tattersall; Editing by Matthew Tostevin)

Source: http://news.yahoo.com/syria-peace-conference-already-hitting-snags-russia-115216400.html

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Tuesday, February 26, 2013

Markets buoyant despite UK downgrade, Italian poll

A man looks at an electronic stock board of a securities firm in Tokyo, Monday, Feb. 25, 2013. Japanese stocks led Asian markets higher Monday, jumping on a report that the prime minister's pick for the next central bank governor will be a strong advocate of loose monetary policy aimed at reviving the moribund economy. (AP Photo/Koji Sasahara)

A man looks at an electronic stock board of a securities firm in Tokyo, Monday, Feb. 25, 2013. Japanese stocks led Asian markets higher Monday, jumping on a report that the prime minister's pick for the next central bank governor will be a strong advocate of loose monetary policy aimed at reviving the moribund economy. (AP Photo/Koji Sasahara)

People walk by an electronic stock board of a securities firm in Tokyo, Monday, Feb. 25, 2013. Japanese stocks led Asian markets higher Monday, jumping on a report that the prime minister's pick for the next central bank governor will be a strong advocate of loose monetary policy aimed at reviving the moribund economy. (AP Photo/Koji Sasahara)

People look at an electronic stock board of a securities firm in Tokyo, Monday, Feb. 25, 2013. Japanese stocks led Asian markets higher Monday, jumping on a report that the prime minister's pick for the next central bank governor will be a strong advocate of loose monetary policy aimed at reviving the moribund economy. (AP Photo/Koji Sasahara)

(AP) ? Markets roared ahead Monday as investors brushed aside a downgrade of Britain's credit rating and uncertainty over Italian election results.

Investor sentiment, which has been largely positive in 2013, has rebounded since last Thursday, when it was hurt by concerns over the possible end of super-easy U.S. monetary policy.

The rebound was led by Tokyo on Monday, where stocks surged on reports the prime minister's pick for central bank governor will be a strong advocate of loose monetary policy aimed at reviving the moribund economy.

The positive momentum seen during the Asian trading session carried through into Europe, even after Moody's stripped Britain of its triple-A credit rating and as Italians headed to the polls on the final day of a general election that has proven to be closer than many thought.

Investors brushed aside the downgrade as it had been widely expected, but remained cautious over the Italian elections due to the country's debt problems. Of the 17 European Union countries that use the euro, Italy has the second-highest level of debt as a proportion of its annual gross domestic product. Only Greece's is higher.

"Given that Italy has a long history of fractious coalition governments which make it difficult to govern, any other outcome than another coalition seems unlikely, and as such this could well make further progress on reform extremely problematic," said Michael Hewson, senior market analyst at CMC Markets.

Milan's FTSE MIB was solid, though, trading 1 percent at 16,394. Elsewhere in Europe, the FTSE 100 index of leading British shares was up 0.6 percent at 6,372 while Germany's DAX surged 2 percent to 7,811. The CAC-40 in France was 1.2 percent higher at 3,750.

The euro was also firm, trading 0.4 percent higher at $1.3268 while the British pound recovered after hitting its lowest level against the U.S. dollar since July 2010. It was 0.3 percent up on the day at $1.5148.

Wall Street was poised for a higher opening, with Dow futures up 0.3 percent and the broader S&P 500 futures 0.4 percent higher.

It's a particularly busy week on the U.S. economic news front, with investors awaiting a raft of data as well as remarks from Federal Reserve chairman Ben Bernanke. Last week, the minutes from the Fed's last policy meeting showed concern over the central bank's monetary stimulus, stoking jitters in the markets. Meanwhile, lawmakers in Congress are also grappling over the budget again.

Earlier in Asia, Japan's benchmark Nikkei 225 surged 2.4 percent to end at 11,662.52 while the yen dropped further against the dollar after local news outlets reported that Prime Minister Shinzo Abe was preparing to nominate Haruhiko Kuroda as the next governor of the Bank of Japan.

Kuroda is an Oxford-educated former vice minister of finance who is currently president of the Asian Development Bank. The 67-year-old is seen as someone who backs Abe's plan to jumpstart the world's third-largest economy by fighting deflation through monetary easing and hefty government spending.

"The market has become very excited over this news as he will be a market friendly choice," said Chris Weston of IG Markets.

Since the Asian session, the yen has recovered and the dollar was trading 0.5 percent lower at 93.92 yen. Earlier it had risen to 94.76 yen and near two and a half year highs.

Over the past few weeks the yen has fallen by around 20 percent and that's helped the Nikkei gain around 30 percent. The country's exporters have done particularly well amid hopes their products will be more price competitive in international markets.

Elsewhere in Asia, Hong Kong's Hang Seng rose 0.2 percent to close at 22,820.08 while South Korea's Kospi ended 0.5 percent lower at 2,009.52.

In mainland China, the Shanghai Composite Index climbed 0.5 percent to close at 2,325.82 and the smaller Shenzhen Composite Index ended 0.8 percent higher at 955.79.

Chinese stocks rose even though a survey showed manufacturing activity this month declined to a four-month low, a reminder of possible threats to recovery in the world's second biggest economy.

Oil prices tracked equities higher with the benchmark New York rate up 73 cents at $93.86 a barrel.

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/f70471f764144b2fab526d39972d37b3/Article_2013-02-25-World%20Markets/id-e9f42e956bff4e58a697b73f7f730fc3

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