Papa pipefish's pregnancy good for young's immunity

MALE pipefish pregnancy may suit the females, but it's a real boon for their offspring.

In human fetuses, antibodies from the mother's egg and others that pass across the placenta help build its developing immune system. Sperm are too small to carry antibodies, so males aren't thought to contribute.

Not so in pipefish, where the male carries the pregnancy. To see if the immune priming might come from both the mother's egg and via the father's placenta-like structure, Olivia Roth at the Helmholtz Centre for Ocean Research Kiel in Germany and colleagues exposed lab-grown male and female broad-nosed pipefish to dead bacteria. The fish were then left to mate and the resulting offspring were later also exposed.

The young had the strongest immune response if both parents had been exposed to the bacteria, suggesting both provided antibodies (The American Naturalist, doi.org/jrq).

Pipefish may not be the only fathers that help build their offspring's immune system. Pigeons of both sexes have been shown to "lactate" antibody-rich "milk" in their crops for their chicks.

If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.

All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.

If you are having a technical problem posting a comment, please contact technical support.

Read More..

Crunch time for defending champions Malaysia

SINGAPORE: Southeast Asian champions Malaysia will be desperate to put a run of poor performances behind them when they begin the defence of their AFF Suzuki Cup football title this weekend.

Malaysia host southern neighbours Singapore in what is set to be a hothouse atmosphere at Kuala Lumpur's Bukit Jalil National Stadium on Sunday, with the home fans hoping to see their team repeat their heroics of 2010.

The Tigers showed bite in that tournament when they overcame a poor start to win the Southeast Asian title for the first time with a 4-2 aggregate victory over Indonesia in the final.

Coach K. Rajagobal has maintained the nucleus of that winning side but their form has dipped alarmingly with warm-up losses to Vietnam and Thailand, and draws at home against unfancied Hong Kong and Bangladesh.

Rajagobal was livid after Tuesday's 1-1 draw with Bangladesh and warned he would make "drastic changes" if they slip-up again this weekend.

"We didn't get the desired result against Bangladesh and I'll take stern action if we don't get a positive result against Singapore," he said.

"I'm concerned with the team's display... Another below-par performance will force me to make drastic changes to the team."

Singapore will be looking to avenge a 2-0 loss to the Malaysians at the same venue in June, and the three-time Southeast Asian champions are coming off a 4-0 thumping of Pakistan in their final warm-up game on Monday.

Group B also includes Indonesia, who reached the final two years ago but now look a very different side following a rift which has split the country's football scene into two leagues with different governing bodies.

Players from the breakaway Indonesian Super League have been told by their clubs not to join up with the coach Nil Maizar's national team, although Persija Jakarta striker Bambang Pamungkas opted to put his country first.

"I came from my home to join the Indonesian national team training camp," said the 32-year-old. "As a professional, I hope that the Indonesian football dualism ends here."

Thailand are the hosts of Group A and they will kick off their campaign at the Rajamangala Stadium in Bangkok on Saturday against the Philippines, the surprise package of the last Suzuki Cup.

The Thais have won the competition three times, but their last title came a decade ago in 2002. Led by wily coach Winfried Schafer, their squad blends experience with young talent and they will be fancied to end their long drought.

"The AFF Suzuki Cup is very important for this region and I hope we can at least reach the final, although it will not be easy," said the German. "We face three good teams but we are playing at home which is an advantage."

They face a tough opening test against the Filipinos, who reached the semi-finals for the first time in 2010 after a stunning 2-0 win over defending champions Vietnam in Hanoi.

The ambitious Azkals are looking to move a step beyond that and they are certainly well prepared after playing more than a dozen friendly matches in the past six months.

The match will be preceded by the tournament's opener between 2008 winners Vietnam and Myanmar.

Group matches are split between Kuala Lumpur and Bangkok with the semis and final, all played over two legs home and away, starting on December 8. The tournament wraps up on December 22.

- AFP/ck

Read More..

Apple targets Galaxy Note 2, S3 Mini in latest court request

Apple and Samsung continue to hurl gadgets at each other in their seemingly never-ending patent battle.

Midweek, Samsung filed a request that the
iPad Mini, the fourth-generation iPad, and the fifth-generation iPod Touch be included in a California case set to go to trial in 2014. Not to be outdone, Apple responded last night by asking that several more Samsung devices, including the
Galaxy Note 2, the Galaxy S3 with
Android 4.1, and the Galaxy S3 Mini, be covered by the case.

The last round of tit-for-tat additions to the list of gadgets covered by the case included Apple's iPhone 5, Samsung's Galaxy Note 10.1, and the Galaxy Nexus smartphone in conjunction with Google's Android 4.1 Jelly Bean OS. The U.S. model of the Galaxy S3 -- which was not yet running Android 4.1 -- was also part of the earlier back-and-forth.

Back in August, Apple won an earlier California case, which focused on exterior design issues and not just on what Apple said were similarities to patented software features. This case deals more with software and user interface patents, raising the question of whether Android-maker Google might somehow get pulled directly into the fray.

The case is being overseen by U.S. Magistrate Judge Paul Grewal in a federal court in San Jose, Calif.

Read More..

Distant Dwarf Planet Secrets Revealed

Orbiting at the frozen edges of our solar system, the mysterious dwarf planet Makemake is finally coming out of the shadows as astronomers get their best view yet of Pluto's little sibling.

Discovered in 2005, Makemake—pronounced MAH-keh MAH-keh after a Polynesian creation god—is one of five Pluto-like objects that prompted a redefining of the term "planet" and the creation of a new group of dwarf planets in 2006. (Related: "Pluto Not a Planet, Astronomers Rule.")

Just like the slightly larger Pluto, this icy world circles our sun beyond Neptune. Researchers expected Makemake to also have a global atmosphere—but new evidence reveals that isn't the case.

Staring at a Star

An international team of astronomers was able for the first time to probe Makemake's physical characteristics using the European Southern Observatory's three most powerful telescopes in Chile. The researchers observed the change in light given off by a distant star as the dwarf planet passed in front of it. (Learn how scientists found Makemake.)

"These events are extremely difficult to predict and observe, but they are the only means of obtaining accurate knowledge of important properties of dwarf planets," said Jose Luis Ortiz, lead author of this new study and an astronomer at the Instituto de Astrofisica de Andalucia, in Spain.

It's like trying to study a coin from a distance of 30 miles (48 kilometers) or more, Ortiz added.

Ortiz and his team knew Makemake didn't have an atmosphere when light from the background star abruptly dimmed and brightened as the chilly world drifted across its face.

"The light went off very abruptly from all the sites we observed the event so this means this world cannot have a substantial and global atmosphere like that of its sibling Pluto," Ortiz said.

If Makemake had an atmosphere, light from the star would gradually decrease and increase as the dwarf planet passed in front.

Coming Into Focus

The team's new observations add much more detail to our view of Makemake—not only limiting the possibility of an atmosphere but also determining the planet's size and surface more accurately.

"We think Makemake is a sphere flattened slightly at both poles and mostly covered with very white ices—mainly of methane," said Ortiz.

"But there are also indications for some organic material at least at some places; this material is usually very red and we think in a small percentage of the surface, the terrain is quite dark," he added.

Why Makemake lacks a global atmosphere remains a big mystery, but Ortiz does have a theory. Pluto is covered in nitrogen ice. When the sun heats this volatile material, it turns straight into a gas, creating Pluto's atmosphere.

Makemake lacks nitrogen ice on its surface, so there is nothing for the sun to heat into a gas to provide an atmosphere.

The dwarf planet has less mass, and a weaker gravitational field, than Pluto, said Ortiz. This means that over eons of time, Makemake may not have been able to hang on to its nitrogen.

Methane ice will also transform into a gas when heated. But since the dwarf planet is nearly at its furthest distance from the sun, Ortiz believes that Makemake's surface methane is still frozen. (Learn about orbital planes.)

And even if the methane were to transform into a gas, any resulting atmosphere would cover, at most, only ten percent of the planet, said Ortiz.

The new results are detailed today in the journal Nature.

Read More..

After Sandy, World Hopes to Hear New US Voice on Climate Change

During a year with a monster storm and scorching heat waves, Americans have experienced the kind of freakish weather that many scientists say will occur more often on a warming planet.

And as a re-elected president talks about global warming again, climate activists are cautiously optimistic that the U.S. will be more than a disinterested bystander when the U.N. climate talks resume Monday with a two-week conference in Qatar.

"I think there will be expectations from countries to hear a new voice from the United States," said Jennifer Morgan, director of the climate and energy program at the World Resources Institute in Washington.

The climate officials and environment ministers meeting in the Qatari capital of Doha will not come up with an answer to the global temperature rise that is already melting Arctic sea ice and permafrost, raising and acidifying the seas, and shifting rainfall patterns, which has an impact on floods and droughts.

They will focus on side issues, like extending the Kyoto protocol — an expiring emissions pact with a dwindling number of members — and ramping up climate financing for poor nations.

They will also try to structure the talks for a new global climate deal that is supposed to be adopted in 2015, a process in which American leadership is considered crucial.

Many were disappointed that Obama didn't put more emphasis on climate change during his first term. He took some steps to rein in emissions of heat-trapping gases, such as sharply increasing fuel efficiency standards for cars and trucks. But a climate bill that would have capped U.S. emissions stalled in the Senate.

"We need the U.S. to engage even more," European Union Climate Commissioner Connie Hedegaard told The Associated Press. "Because that can change the dynamic of the talks."

The world tried to move forward without the U.S. after the Bush Administration abandoned the Kyoto Protocol, a 1997 pact limiting greenhouse emissions from industrialized nations. As that agreement expires this year, the climate curves are still pointing in the wrong direction.

The concentration of heat-trapping gases like carbon dioxide has jumped 20 percent since 2000, primarily from the burning of fossil fuels like coal and oil, according to a U.N. report released this week. And each year, the gap between what researchers say must be done to reverse this trend, and what's actually being done, gets wider.

Bridging that gap, through clean technology and renewable energy, is not just up to the U.S., but to countries like India and China, whose carbon emissions are growing the fastest as their economies expand.

But Obama raised hopes of a more robust U.S. role in the talks when he called for a national "conversation" on climate change after winning re-election. The issue had been virtually absent in the presidential campaigning until Hurricane Sandy slammed into the East Coast.

The president still faces domestic political constraints, and there's little hope of the U.S. increasing its voluntary pledge in the U.N. talks of cutting emissions by 17 percent by 2020, compared to 2005 levels.

Still, just a signal that Washington has faith in the international process would go a long way, analysts said.

"The perception of many negotiators and countries is that the U.S. is not really interested in increasing action on climate change in general," said Bill Hare, senior scientist at Climate Analytics, a non-profit organization based in Berlin.

Read More..