Speculation on pope’s successor turns to Africa, Latin America

Pope Benedict XVI’s decision to resign has rekindled debate within the Catholic Church and worldwide speculation about the possibility that the church will reach beyond the European clergy who have long held power in the Vatican to choose the next pope.

With an eye to vibrant Catholic communities in Africa, Latin America and Southeast Asia, the Sacred College of Cardinals may weigh the pros and cons of selecting the next pope from another continent.

Barack H. Obama is the 44th President of the United States.

His story is the American story — values from the heartland, a middle-class upbringing in a strong family, hard work and education as the means of getting ahead, and the conviction that a life so blessed should be lived in service to others. (from whitehouse.gov)


With a father from Kenya and a mother from Kansas, President Obama was born in Hawaii on August 4, 1961. He was raised with help from his grandfather, who served in Patton’s army, and his grandmother, who worked her way up from the secretarial pool to middle management at a bank.

After working his way through college with the help of scholarships and student loans, President Obama moved to Chicago, where he worked with a group of churches to help rebuild communities devastated by the closure of local steel plants.

He went on to attend law school, where he became the first African—American president of the Harvard Law Review. Upon graduation, he returned to Chicago to help lead a voter registration drive, teach constitutional law at the University of Chicago, and remain active in his community.

President Obama’s years of public service are based around his unwavering belief in the ability to unite people around a politics of purpose.

Palestine Wins Statehood Status

The U.N. General Assembly voted today to approve Palestinians’ request to be upgraded to a “non-member observer state,” defying opposition by the U.S. and Israel. (from yahoo.com)

Before the vote, Palestinian President Mahmoud Abbas told the General Assembly that it “is being asked today to issue the birth certificate of Palestine.”

Of the 193 countries in the General Assembly 138 voted to recognize Palestine. Only nine, including the U.S., voted against it. Another 41 countries abstained.

In the West Bank, Palestinians erupted in a roar of cheers, horn honking and fireworks as crowds thronged the main square of Ramallah to celebrate the world’s recognition of their state.

The historic vote recognizes Palestine as a state and gives Palestine the right to join U.N. agencies. It opens the door for Palestine to become a party to the International Criminal Court, allowing them to bring cases against Israel.

Israel and the U.S. argued that the vote is purely symbolic, would change nothing on the ground, would hurt peace talks and could affect U.S. funding.

Most European countries were expected to side with the Palestinians in this dispute. The only countries voting against the resolution besides the United States and Israel were Canada, the Czech Republic and some Pacific Island states. U.S. allies France, Sweden and Italy all voted for the resolution, as did countries where the U.S. is expected to hold sway like Mexico, Afghanistan, India and Iraq. Germany, Poland and the United Kingdom all stayed out of the fray, preferring to abstain.

U.S. Ambassador to the U.N. Susan Rice downplayed the significance of the victorious resolution. “Today’s grand pronouncement will soon fade and the Palestinian people will wake up tomorrow and find that little about their lives has changed, save that the prospects of a durable peace have only receded,” Rice said.

The vote today falls short of triggering the law in Congress that automatically cuts all U.S. aid to Palestinian Authority and any programs in the Palestinian Territories, as well as aid to any organizations that recognize Palestine as a state. Non-member observer status falls short of being as being accepted as a “member state,” which would allow Palestine to have full voting rights in the U.N. General Assembly, something Congress is vehemently opposed to if done outside of talks with Israel.

Though it doesn’t reach that automatic trigger, Congress could still act against the Palestinians. The U.S. gives an average of $200 million of aid a year to support the administration of the Palestinian Authority and other programs, but Congress has not yet released the money for this year.

Single atom transistor gets precise position on chip

The basic unit of matter could become the basic unit of computing. A lone atom of phosphorus embedded in a sheet of silicon has been made to act as a transistor. (from newscientist1.blogspot.de)
It is not the first single-atom transistor, but it can be much more precisely positioned than its predecessors, potentially making it a lot more useful.
“It’s an absolutely fantastic piece of engineering,” says physicist Bruce Kane at the University of Maryland, who was not involved in the work.
Elaborate production methods would initially prevent single-atom phosphorus transistors from being a worthwhile addition to traditional computers, but they may be necessary one day. The devices could also find an application in futuristic, super-speedy quantum computers.
A transistor is essentially a lump of conducting material sitting between two electrodes that acts as a switch. A pulse of voltage is supplied by a further electrode,”opening” the switch and allowing current to flow through the transistor.

Wiggling atom

Combining transistors on a chip produces logic circuits that can carry out computations. A goal shared by computer chip makers is to keep shrinking the transistor: squeeze ever more onto a single chip and you increase its computational power.
To dictate the exact position of their single atom, Michelle Simmons at the University of New South Wales, Australia, and colleagues started by covering a silicon sheet with a layer of hydrogen. Then they used the tip of a scanning tunnelling microscope to remove hydrogen atoms according to a precise pattern. They exposed two perpendicular pairs of exposed silicon strips plus a tiny rectangle made of just six silicon atoms that sat at the junction between these strips (see diagram, right).
Adding phosphine gas (PH3) and heating caused phosphorus atoms, which are conducting, to bind to these exposed areas of silicon. In the case of the rectangle only one atom inserted itself into the silicon network.
The result was four phosphorus electrodes and a single phosphorus atom.

Boutique operation

One pair of electrodes was separated by a 108-nanometre gap. Creating a voltage between them allowed current to flow between the two perpendicular electrodes – separated from each other by just 20 nanometres, through the single phosphorus atom, which acted as a transistor.
Kane points out that the atomic transistor works at temperatures below 1 kelvin and that fabrication is difficult. “It’s a very slow, boutique operation to make one of these,” he says.
Simmons agrees, but counters that the traditional computer makers may be forced to adopt this technology if they want to make ever smaller chips. “This is one of the only techniques that allows you to make single atom devices,” she says.
Physicist Jeremy Levy of the University of Pittsburgh in Pennsylvania reckons the future of single atom transistors lies in quantum computers. The spin of the electrons in isolated phosphorus atoms could serve as qubits, the quantum equivalent of the bits in today’s computers. Controlling the interaction between qubits requires knowing the exact location of each one. Now that the location of individual atoms can be controlled, the next challenge is to link two of these transistors, Levy says.

Desertec projects moves beyond planning stage

European and North African governments have ushered in a new implementation phase of an ambitious green energy project called Desertec. It hopes to bring renewable energy from Africa to Europe. (from dw.de)

A number of governments in Europe and North Africa have redoubled their efforts to finally get an ambitious green energy project off the ground, Germany’s daily “Süddeutsche Zeitung” reported on Wednesday.

France and Germany, whose Desertec Industry Initiative aims to source future European energy supplies from solar and wind power produced in the deserts of North Africa and the Middle East, have been important financial supporters in the initial phase.

The two nations have been joined by Spain, Italy and Morocco for intensive talks on letting the project finally take shape. According to newspaper reports, negotiations are under way on building a 600-million-euro ($778 million) solar power station in Morocco which is to transport energy to the European mainland.

Pilot project

The “Süddeutsche Zeitung” said a corresponding declaration of intent would be signed as early as November this year. It added that a government-level multinational agreement would be inked in the first half of 2013, quoting Morocco’s Industry Minister, Abdelkader Amara.

Desertec Chief Paul van Son stated the solar power plant in question would be built between 2014 and 2016 and would eventually have a capacity of 150 Megawatts.

The project will be co-financed by industry, national governments and international energy organizations. Nations other than those already involved in the scheme would be welcome to join in the process, the industry initiative said.

What is the Smallest Star?

The biggest stars in the Universe are the monster red hypergiants, measuring up to 1,500 times the size of the Sun. But what are the smallest stars in the Universe? (from universetoday.com)

The smallest stars around are the tiny red dwarfs. These are stars with 50% the mass of the Sun and smaller. In fact, the least massive red dwarf has 7.5% the mass of the Sun. Even at this smallest size, a star has the temperature and pressures in its core so that nuclear fusion reactions can take place.
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One example of red dwarf star is the closest star to Earth, Proxima Centauri, located just 4.2 light-years away. Proxima Centauri has 12% the mass of the Sun, and it’s estimated to be just 14.5% the size of the Sun. The diameter of Proxima Centauri is about 200,000 km. Just for comparison, the diameter of Jupiter is 143,000 km, so Proxima Centauri is only a little larger than Jupiter.

But that’s not the smallest star ever discovered.

The smallest known star right now is OGLE-TR-122b, a red dwarf star that’s part of a binary stellar system. This red dwarf the smallest star to ever have its radius accurately measured; 0.12 solar radii. This works out to be 167,000 km. That’s only 20% larger than Jupiter. You might be surprised to know that OGLE-TR-122b has 100 times the mass of Jupiter, but it’s only a little larger.

And that is the smallest known star. But there are certainly smaller stars out there. The smallest theoretical mass for a star to support nuclear fusion is 0.07 or 0.08 solar masses, so smaller stars are out there.