Plants Grow Fine Without Gravity


When researchers sent plants to the International Space Station in 2010, the flora wasn't meant to be decorative. Instead, the seeds of these small, white flowers—called Arabidopsis thaliana—were the subject of an experiment to study how plant roots developed in a weightless environment.

Gravity is an important influence on root growth, but the scientists found that their space plants didn't need it to flourish. The research team from the University of Florida in Gainesville thinks this ability is related to a plant's inherent ability to orient itself as it grows. Seeds germinated on the International Space Station sprouted roots that behaved like they would on Earth—growing away from the seed to seek nutrients and water in exactly the same pattern observed with gravity. (Related: "Beyond Gravity.")

Since the flowers were orbiting some 220 miles (350 kilometers) above the Earth at the time, the NASA-funded experiment suggests that plants still retain an earthy instinct when they don't have gravity as a guide.

"The role of gravity in plant growth and development in terrestrial environments is well understood," said plant geneticist and study co-author Anna-Lisa Paul, with the University of Florida in Gainesville. "What is less well understood is how plants respond when you remove gravity." (See a video about plant growth.)

The new study revealed that "features of plant growth we thought were a result of gravity acting on plant cells and organs do not actually require gravity," she added.

Paul and her collaborator Robert Ferl, a plant biologist at the University of Florida in Gainesville, monitored their plants from the Kennedy Space Center in Florida using images sent from the space station every six hours.

Root Growth

Grown on a nutrient-rich gel in clear petri plates, the space flowers showed familiar root growth patterns such as "skewing," where roots slant progressively as they branch out.

"When we saw the first pictures come back from orbit and saw that we had most of the skewing phenomenon we were quite surprised," Paul said.

Researchers have always thought that skewing was the result of gravity's effects on how the root tip interacts with the surfaces it encounters as it grows, she added. But Paul and Ferl suspect that in the absence of gravity, other cues take over that enable the plant to direct its roots away from the seed and light-seeking shoot. Those cues could include moisture, nutrients, and light avoidance.

"Bottom line is that although plants 'know' that they are in a novel environment, they ultimately do just fine," Paul said.

The finding further boosts the prospect of cultivating food plants in space and, eventually, on other planets.

"There's really no impediment to growing plants in microgravity, such as on a long-term mission to Mars, or in reduced-gravity environments such as in specialized greenhouses on Mars or the moon," Paul said. (Related: "Alien Trees Would Bloom Black on Worlds With Double Stars.")

The study findings appear in the latest issue of the journal BMC Plant Biology.


Read More..

Gay Marriage: Will Justices Follow Popular Opinion?













The Supreme Court's announcement that it would hear two cases challenging laws prohibiting same-sex marriage has reinvigorated one of the most hotly contentious social debates in American history, a debate that has been fueled by a dramatic change in attitudes.


With some states taking significant steps towards legalizing gay marriage, the hearings come at a critical moment.


This week in Washington State, hundreds of same-sex couples lined up to collect marriage licenses after Gov. Christine Gregoire announced the passing of a voter-approved law legalizing gay marriage.


"For the past 20 years we've been saying just one more step. Just one more fight. Just one more law. But now we can stop saying 'Just one more.' This is it. We are here. We did it," Gregoire told a group of Referendum 74 supporters during the law's certification.


Washington is just the most recent of several states to pass legislation legalizing same-sex marriage, signifying a significant departure from previous thinking on the controversial subject.


READ: Court to Take Up Same-Sex Marriage


A study by the Pew Research Center on changing attitudes on gay marriage showed that in 2001 57 percent of Americans opposed same-sex marriage, while 35 percent of Americans supported it.


The same poll shows that today opinions have greatly shifted to reflect slightly more support for same-sex marriage than opposition -- with 48 percent of Americans in favor and 43 percent opposed.


In fact, just two years ago, 48 percent of Americans opposed same-sex marriage while only 42 percent supported it -- indicating that opinions have changed dramatically in the last couple of years alone.






David Paul Morris/Getty Images











Supreme Court Set to Tackle Same-Sex Marriage Watch Video









Gay Marriage: Supreme Court to Examine Marriage Equality Watch Video









Marijuana, Gay Marriage Win in 2012 Election Results Watch Video





Check Out Same-Sex Marriage Status in the U.S. State By State


It's hard to imagine that only 16 years ago, the fervent gay marriage debate led to the conception of the Defense of Marriage Act, which defines marriage as a union solely held between a man and a woman.


While debating the Defense of Marriage Act in September 1996, former Sen. Robert Byrd said: "If same-sex marriage is accepted, then the announcement will be official: America will have said that children do not need a mother and a father. Two mothers or two fathers will be OK. It'll be just as good. This would be a catastrophe."


Even a few short years ago a newly-elected President Obama did not support the legalization of gay marriage. It wasn't until earlier this year, at the end of hiss first term and with the impending election in sight, that the president told ABC's Robin Roberts the he'd "been going through an evolution on this issue."


Obama went on to attribute his shift in stance to the influence of his daughters.


"You know, Malia and Sasha, they've got friends whose parents are same-sex couples. It wouldn't dawn on them that somehow their friends' parents would be treated differently," he said. "That's the kind of thing that prompts -- a change in perspective."


Obama isn't the only one to experience an evolution in thinking on the matter of gay marriage. Attitudes towards same-sex marriage have shifted dramatically over the past decade across the board, particularly in the past few years.


Gone are the days when a majority of people opposed same-sex marriage; the days when gay politicians and supporters of same-sex marriage could not get elected.


Get more pure politics at ABCNews.com/Politics and a lighter take on the news at OTUSNews.com


Today, nine states and the District of Columbia allow same-sex unions -- a number likely considered inconceivable just a few short years ago. And yet, the same-sex marriage debate still begs for the answering of a question: Will this newfound public opinion, largely driven by young people, women and Democrats, have an effect on the Supreme Court's ultimate decision on the matter?


"I think (gay marriage is) just not a big deal for a lot of young people," Elizabeth Wydra of the Constitutional Accountability Center says. "The justices are human beings so they're not completely immune to public opinion. ... I think the real question for them is going to be do they want to be on the wrong side of history?"



Read More..

In Michigan, heart of organized labor, Republicans push to limit union power



Unbowed by their party’s thumping at the polls nationally last month, Republicans who control Michigan’s legislature approved measures in the lame-duck session this week that would make Michigan a “right to work” state, effectively banning unions there from requiring workers to pay labor dues.

Read More..

NParks sees healthy increase in volunteer numbers






SINGAPORE: The National Parks Board (NParks) has seen a 33 per cent increase in the number of active volunteers this year, compared to 2011.

Over 800 volunteers now serve on a regular basis and they range from as young as nine years old to over 80. Thirty nine of them have served for more than 10 years.

The volunteers are involved in activities such as leading tours, running programmes and helping out with surveys.

NParks on Saturday honoured its volunteers as part of celebrations for International Volunteer Day, which fell on 5 December, at HortPark.

Dr Leong Chee Chiew, deputy chief executive officer of National Parks Board and Commissioner of Parks and Recreation said: "By making planned programmes like guided walks and talks available to people from all walks of life, our volunteers' efforts have made it possible for everyone to learn more about biodiversity and enjoy nature.

"Thanks to their commitment to various volunteer programmes, they have made it possible for all of us to enjoy a dose of nature as we go about our daily lives.

"Our City in a Garden provides Singaporeans with a high quality of life because of our volunteers."

- CNA/ck



Read More..

India misguided, paranoid over China: Guha

MUMBAI: A good half-hour into the discussion on 'India, China and the World', historian Ramachandra Guha issued a disclaimer—all the three members on the panel had been to China only once. "We should learn their language, promote quality research, and have a panel on China driven by Chinese scholars," he said. And that was the general tenor of the debate—that the Indian attitude to China was influenced by a mix of ignorance, cautious optimism about partnerships and a whole lot of misguided paranoia. "Don't demonise the Chinese, please," Guha finally said in response to a question.

"China has existed in our imaginations," observed Sunil Khilnani, professor of politics and author of The Idea Of India. "There's been very little sustained engagement with the reality of China and very little of our own produced knowledge about China." It was after the events of 1962 ('war' in the popular imagination, 'skirmish' to the scholars participating in the discussion), explained Khilnani, that a miffed India "withdrew". It's the 50th anniversary of that exchange this year, and "what we haven't been able to do is learn from the defeat", observed Khilnani. Both could have benefited from greater engagement. "China has had a very clear focus on primary education and achieved high levels of literacy before its economic rise. It has also addressed the issue of land reform," said Khilnani. Guha added that China could learn from the "religious, cultural and linguistic pluralism" in India.

But China and India weren't always so out of sync with each other. Srinath Raghavan, a scholar of military history, got both Guha and Khilnani to talk about pre-1962 relations between the two when the picture was rosier. Tagore was interested in China and so was Gandhi. Both were very large countries with large populations and shared what Guha calls a "lack of cultural inferiority". "They were both," he continued, "also heavily dependent on peasant communities." Nehru was appreciative of China's will to modernize and industrialize and its adoption of technology to achieve those ends. In turn, Chinese politicians argued for Indian independence.

Things soured more, feel both Khilnani and Guha, after the Dalai Lama fled to India in 1959. "He was welcomed here as a spiritual leader but the intensification of the conflict dates to the Dalai Lama's flight," said Guha. Both Guha and Khilnani argued that Nehru's decision to not react aggressively to China's occupation of Tibet was, in the long run, the right one and prevented further "militarization" of the region. An audience member wondered if that didn't make India "China's puppet". Guha disagreed. "If there's a Tibetan culture alive today," he said, "it's not because of Richard Gere. Don't believe in the hypocrisy of the Western countries. Will they give them land, employment, dignified refuge? The Tibetans is one of the few cases in which our record is honorable."

But the difference in levels of development and the lopsided trade relations between the two countries have only fuelled the suspicions many Indians seem to harbour about China. People were worried, said Guha, even about cricket balls made in China. Audience questions reflected those worries. A member asked about China's "strategy to conquer the world" and its likely impact on India. Guha cautioned against stereotypes; Khilnani explained, "History is littered with the debris of states that have tried to dominate the world. What we're doing may be more long-lasting."

Read More..

Plants Grow Fine Without Gravity


When researchers sent plants to the International Space Station in 2010, the flora wasn't meant to be decorative. Instead, the seeds of these small, white flowers—called Arabidopsis thaliana—were the subject of an experiment to study how plant roots developed in a weightless environment.

Gravity is an important influence on root growth, but the scientists found that their space plants didn't need it to flourish. The research team from the University of Florida in Gainesville thinks this ability is related to a plant's inherent ability to orient itself as it grows. Seeds germinated on the International Space Station sprouted roots that behaved like they would on Earth—growing away from the seed to seek nutrients and water in exactly the same pattern observed with gravity. (Related: "Beyond Gravity.")

Since the flowers were orbiting some 220 miles (350 kilometers) above the Earth at the time, the NASA-funded experiment suggests that plants still retain an earthy instinct when they don't have gravity as a guide.

"The role of gravity in plant growth and development in terrestrial environments is well understood," said plant geneticist and study co-author Anna-Lisa Paul, with the University of Florida in Gainesville. "What is less well understood is how plants respond when you remove gravity." (See a video about plant growth.)

The new study revealed that "features of plant growth we thought were a result of gravity acting on plant cells and organs do not actually require gravity," she added.

Paul and her collaborator Robert Ferl, a plant biologist at the University of Florida in Gainesville, monitored their plants from the Kennedy Space Center in Florida using images sent from the space station every six hours.

Root Growth

Grown on a nutrient-rich gel in clear petri plates, the space flowers showed familiar root growth patterns such as "skewing," where roots slant progressively as they branch out.

"When we saw the first pictures come back from orbit and saw that we had most of the skewing phenomenon we were quite surprised," Paul said.

Researchers have always thought that skewing was the result of gravity's effects on how the root tip interacts with the surfaces it encounters as it grows, she added. But Paul and Ferl suspect that in the absence of gravity, other cues take over that enable the plant to direct its roots away from the seed and light-seeking shoot. Those cues could include moisture, nutrients, and light avoidance.

"Bottom line is that although plants 'know' that they are in a novel environment, they ultimately do just fine," Paul said.

The finding further boosts the prospect of cultivating food plants in space and, eventually, on other planets.

"There's really no impediment to growing plants in microgravity, such as on a long-term mission to Mars, or in reduced-gravity environments such as in specialized greenhouses on Mars or the moon," Paul said. (Related: "Alien Trees Would Bloom Black on Worlds With Double Stars.")

The study findings appear in the latest issue of the journal BMC Plant Biology.


Read More..

Federal Agencies Brace for Deep Cuts Post-'Cliff'


Dec 7, 2012 4:22pm







gty barack obama john boehner ll 121206 wblog Federal Agencies Brace for Deep Cuts Post Cliff

Toby Jorrin/AFP/Getty Images


With the “fiscal cliff” quickly approaching, federal agencies are stepping up preparations for deep automatic budget cuts that will kick in Jan. 2 unless the White House and Congress can reach a deal.


The Office of Management and Budget told ABC News that a memo went out to federal agencies earlier this week seeking “additional information and analysis” in order to finalize spending cuts required if we go off the cliff.


The agencies are considering which workers to furlough, projects to put on hold and offices that will have to close.


The request follows the administration’s release of a 400-page report in September that outlined the budget areas to be impacted by the $1.2 trillion in automatic spending cuts and what percentages they would be slashed.


READ MORE: White House Details ‘Doomsday’ Budget Cuts


Billions of dollars could be slashed from defense operations and maintenance programs. Medicare would take a two-percent hit, trimming millions in payouts to health care providers. Scientific research programs would be gutted. Aid for the poor and needy would be sharply curtailed.


The report also detailed operations that would be exempt from any cuts, including active-duty military operations, nuclear watchdogs, homeland security officials, veterans care and other critical areas.


READ: Pentagon Begins Planning for ‘Cliff’ Cuts


Asked about the agency preparations underway, White House spokesman Jay Carney said Wednesday that OMB “must take certain steps to ensure the administration is ready to issue such an order should Congress fail to act.”


“Earlier this week, OMB issued a request to federal agencies for additional information to finalize calculations on the spending reductions that would be required,” Carney said.


“This action should not be read … as a change in the administration’s commitment to reach an agreement and avoid sequestration.  OMB is simply ensuring that the administration is prepared, should it become necessary to issue such an order,” he said. “OMB will continue to consult with agencies and will provide additional guidance as needed.  This is just acting responsibly because of the potential for this happening.”


Get more pure politics at ABCNews.com/Politics and a lighter take on the news at OTUSNews.com.


More ‘Fiscal Cliff’ Coverage From Today:




SHOWS: World News







Read More..

Survey shows falling satisfaction among federal employees



The report goes a bit further, suggesting “the downward trend of many of the survey items . . . suggest that the continued tight budgets, salary freezes and general public opinion of federal service are beginning to take a toll on even the most committed employees.”

Read More..

Resale prices of non-landed private residential, HDB flats at new highs in Oct & Nov






SINGAPORE: Resale home prices of both non-landed private residential units and HDB flats continued to climb to new highs in October and November against the third quarter 2012.

But according to data released by the Singapore Real Estate Exchange (SRX), the rental market for private homes is showing signs of softening.

As a result, overall gross rental yield dropped to a six-year historic low of 3.77 per cent in the first two months of the fourth quarter.

Meanwhile, prices of private resale homes rose to S$1,222 per square foot (psf) in the first two months of the fourth quarter, up 5.4 per cent from the previous quarter's average of S$1,159 psf.

The report found that resale prices of private homes rose across all regions, with non-landed homes in the suburban region seeing the sharpest increase at 4.5 per cent, compared to the third quarter of 2012.

This is followed by a 3.3 per cent increase in the city fringes and a 2.8 per cent increase in the core central region.

Compared with the first two months of the third quarter this year, transaction volume rose by 6 per cent to reach 2,483 resale transactions in the October to November period.

Meanwhile, the average unit monthly rent of private homes dropped by 1.0 per cent, from S$3.88 psf in the third quarter to S$3.84 in the first two months of forth quarter.

Leading the drop is non-landed homes in the city fringe where prices fell by 2.5 per cent to S$3.91 after rising for the first three consecutive quarters in this year.

The other regions remained relatively stable compared to the previous quarter.

Meanwhile, the report included for the first time data about the sales of small private apartments, commonly known as shoebox units in Singapore.

Year-to-date, just 198 shoebox units changed hands in the resale market.

But the report said there was strong demand for rentals of shoebox units, with 1,328 rental contracts signed this year. This represents 6.7 times more rentals than resales for shoebox units year-to-date. In contrast, the average is 2.4 times more rentals than resales for other types of units.

As a result, shoebox units continue to draw higher rental offers in the fourth quarter.

In the HDB resale market, SRX said overall cash-over-valuation rose to S$34,000 in the first two months into forth quarter. This is S$2,000 shy of the five-year historical high of S$36,000 attained in the third quarter of 2011 since tracking began in 2007.

On a month-to-month basis, overall COV increased from S$33,000 in October to S$35,000 in November.

This has contributed to a 1.1 increase in median prices of HDB flats to a new high of S$455,000, compared to the third quarter.

Overall HDB median rents remained unchanged at S$2,400.

- CNA/ck



Read More..

Tribal women wage war against IMFL

SHIMLA: Tribal women in Lahaul-Spiti and Kinnaur district have waged a unique war to curb social inequality, especially during marriages and other social functions. In a bid to curb show of wealth, women have come up with unique idea of banning the use of English liquor and those defying ban are being imposed heavy penalty.

Liquor is an important part of tribal customs and social get together are incomplete if alcohol and mutton are not served to guests. Since ages, tribals in Kinnaur are brewing liquor locally known as "angoori" while in Lahaul-Spiti they make it from wheat. But with the coming of wealth locally brewed liquor was replaced by whisky and beer resulting into social inequality widening the gap between rich and poor.

Noted social activist of Kinnaur and chairperson of Kinnaur Mahila Kalyan Parishad Ratan Manjari said over the years serving English liquor and beer during marriages and other social functions had become a show of wealth and those not having money too were serving it and get burdened with debt. "Trend was wrong which needed to be stopped and now we have done it in many villages of Kinnaur," she said. Kinnaur Mahila Kalyan Parishad has 200 mahila mandals as its members.

Ratan Manjari said for 5-6 years, they have mobilized support of women in Kinnaur district to tell them how use of English liquor and beer during marriages is resulting in waste of money besides creating divide among rich and poor. "Today, we have succeeded in banning English liquor in social functions, especially in Kalpa, Sangla, Lippa and other areas of district," she said.

To ensure that people obey the decision, a provision of imposing fine has been made by women amicably. "We have decided to impose penalty of Rs 5,000 on people serving the English liquor and those consuming it," Manjari said. She said still a lot more is required to be done.

In Lahaul-Spiti district, Udaipur village is setting an example for others by observing complete ban on English liquor and beer during social gathering for last three years. "During marriages and other functions only locally made liquor is served. Those defying ban are punished by mahila mandal members," said Hemvati, Mahila Mandal member of Udaipur.

Hemvati said if a family in the village found serving English liquor and Beer despite ban, then Rs 10,000 fine is imposed, but if same offence is committed second time then the family is boycotted socially.

"Such decisions are in larger interest of society as seeing rich people serving liquor even poor were following the trend after borrowing money. In one wedding, people were usually spending Rs 50,000 to 1 lakh only on liquor, but now with ban enforced in many villages show of wealth has been curbed in the interest of poor," said Rigzin Samphel Hayerpa, Zila Parishad member from Kolang in Lahaul-Spiti.

Read More..