Science & TechnologyS

Telescope

Proof! Probe Photos of Apollo Landing Sites Reveal to Doubters that Man DID Walk on the Moon

Ever since astronauts Neil Armstrong and Buzz Aldrin took their first steps on the Moon, there has been an adamant group of conspiracy theorists who claim the whole event was concocted in a film studio.

In 2002, a frustrated Mr Aldrin even punched a documentary maker who claimed the Moon missions were faked.

Now new photos taken by Nasa's Lunar Reconnaisance Orbiter (LRO) camera may settle the matter once and for all.

Telescope

Europa, Jupiter's Moon, Could Support Complex Life

Europa
© NASAEuropa, pictured above, may have enough oxygen to support complex, animal-like organisms, according to a new study.
Jupiter's moon Europa should have enough oxygen-rich water to support not only simple micro-organisms but also complex life, according to a University of Arizona researcher who studies ice flows on the frozen moon.

Judging by how quickly Europa's surface ice is replenished, Richard Greenberg estimates that enough oxygen reaches the subterranean ocean to sustain "macrofauna" -- more complex, animal-like organisms.

Assuming Europa life forms would need as much oxygen as Earth-like fish, Greenberg estimates the moon's ocean has enough oxygen to support 6.6 billion pounds of macrofauna.

A key question about whether Europa can support life has been whether its suspected buried ocean contains adequate levels of oxygen.

Arrow Down

Easter Island - Tourists Destroying 'Perfect Place'

Easter Island
© Unknown
Stepping off the plane, tourists are welcomed to Easter Island with a garland of flowers. They find themselves on a tiny dot in the Pacific Ocean, 3,700 kilometres west of Chile, to which the island belongs, and 2,000 kilometres east of Pitcairn Island. All around are the white-flecked waves of the Pacific. "What perfect peace," exclaimed Thor Heyerdahl, a Norwegian explorer when he arrived in the mid-1950s.

He might not say so today. Some 70,000 visitors now arrive each year, up from just 14,000 in the mid-1990s. Apart from the island's utter remoteness, what attracts the tourists are the moai, the mysterious giant stone statues erected by the ancestors of the indigenous Rapa Nui people. They are a testament to a complex society of up to 20,000 people that later shrank to a shadow as a result of calamitous environmental stress and deforestation, a cautionary tale narrated in Collapse, a book by Jared Diamond, a polymath at the University of California.

Today, Easter Island once again faces environmental threats. Food comes from Chile, either by ship or on the seven weekly flights from Santiago (there are also two from Tahiti). The visitors "all pull the chain," Luz Zasso, the mayor, notes acidly. The absence of a sewage system is threatening the cleanliness of the island's underground water sources. But it would be hard to install one without damaging archaeological sites. Electricity comes from diesel-powered generators. Power cuts are frequent. Trash is piling up.

Info

New Virtual Museum Exhibit Launched

OSS
© Natural MuseumOffice of Strategic Services (OSS) officers training in Prince William Forest Park during WWII.
A new online exhibit showcases the compelling stories of Prince William Forest Park, a 15,000-acre woodland where nature and history unite.

Over the centuries, people worked and lived off this forested landscape and called it home. From the 1880s, for 40 years, men and young children toiled in Cabin Branch Pyrite Mine and worked their small farms for sustenance.

In 1936, with the Great Depression and the mine closure, the Roosevelt Administration established the Chopawamsic Recreational Demonstration Area. Over 2,000 Civilian Conservation Corps enrollees constructed roads, dams, and cabins. These housed generations of happy American children escaping from the harsh realities of a city-bound childhood.

In the 1940s, the camps were used to train spies of the Office of Strategic Services, later the Central Intelligence Agency, who were sent behind enemy lines during World War II.

Sherlock

A Third of Dinosaur Species Never Existed?

T Rex
© NGCMany fossils of young dinosaurs, including T. rex relatives (above, a computer-generated image of a young T. rex), have been misidentified as unique species, paleontologists said in October 2009.
Many dinosaurs may be facing a new kind of extinction - a controversial theory suggests as many as a third of all known dinosaur species never existed in the first place.

That's because young dinosaurs didn't look like Mini-Me versions of their parents, according to new analyses by paleontologists Mark Goodwin, University of California, Berkeley, and Jack Horner, of Montana State University.

Instead, like birds and some other living animals, the juveniles went through dramatic physical changes during adulthood.

This means many fossils of young dinosaurs, including T. rex relatives, have been misidentified as unique species, the researchers argue.

Attention

Indus Script Linguistically Dravidian: Expert Reports

The Indus script is Dravidian linguistically and culturally closer to the old Tamil polity than what has been recognised so far, eminent epigraphist Iravatham Mahadevan has said.

He shared some of his recent and still-not-fully-published findings relating to the interpretation of the Indus script, in an endowment lecture on 'Vestiges of Indus Civilisation in Old Tamil' at the 16th annual session of the Tamil Nadu History Congress, which opened here on Friday.

Mr. Mahadevan said that though the claim could be met with incredulity, the evidence he had gathered over four decades of intensive study of the sources - the Indus texts and old Tamil anthologies - had led him to the conclusion.

Meteor

What (Maybe) Didn't Kill the Dinosaurs: Comets

Comet
© Bettmann CorbisCometary commotion: A new mechanism for how icy bodies get past Jupiter and Saturn suggests that comet showers did not play a big role in Earth's extinctions.
A new model for comet production revises the theory of their origins

The chunks of ice and dust that make their home in the Oort cloud, far beyond the orbit of Pluto, sometimes become dislodged and head into the solar system as streaky comets. Some disruptions, caused by passing stars and other interactions with the Milky Way galaxy, are severe enough to send Oort comets into orbits that buzz or even collide with Earth. New simulations have revealed a novel mechanism for their entry into our part of the solar system, a method that also suggests that comet showers may not have been strongly involved in major extinctions on Earth.

Comet dynamics depend heavily on Jupiter and Saturn: their huge gravitational fields tend to keep objects away from Earth. Comets that manage to skirt Jupiter and Saturn, the conventional thinking goes, had to have originated in the outer reaches of the Oort cloud, where perturbations from outside the solar system can be felt most strongly and are writ large across vast cometary orbits that take hundreds of years to complete. Only during comet showers caused by close stellar passages, the theory holds, have extreme gravitational disruptions brought inner Oort cloud comets into the mix.

Sherlock

Armenia: Archeologists Say They've Found Remains of World's Oldest Human Brain

An Armenian-American-Irish archeological expedition claims to have found the remains of the world's oldest human brain, estimated to be over 5,000 years old. The team also says it has found evidence of what may be history's oldest winemaking operation. The discoveries were made recently in a cave in southeastern Armenia.

An analysis performed by the Keck Carbon Cycle Accelerator Mass Spectrometry Laboratory at the University of California, Irvine confirmed that one of three human skulls found at the site contains particles of a human brain dating to around the first quarter of the 4th millennium BC.

"The preliminary results of the laboratory analysis prove this is the oldest of the human brains so far discovered in the world," said Dr. Boris Gasparian, one of the excavation's leaders and an archeologist from the National Academy of Science's Institute of Archaeology and Ethnology in Yerevan. "Of course, the mummies of Pharaonic Egypt did contain brains, but this one is older than the Egyptian ones by about 1,000 to 1,200 years."

Info

Hawking Gives Up Academic Title

Hawking
© Getty ImageA new Lucasian Professor will be appointed in the near future
Professor Stephen Hawking has given up a prestigious academic title.

The physicist, who has motor neurone disease, is completing his last day as Cambridge University's Lucasian Professor of Mathematics.

The university said it was policy for holders of the title to retire at 67 and Prof Hawking was 67 in January.

Prof Hawking, who is one of the world's leading cosmologists, will continue working at the university and a new Lucasian Professor will be appointed.

Previous holders of the title, founded by MP Henry Lucas in 1663, include Sir Isaac Newton, Charles Babbage, Sir Joseph Larmor and Sir James Lighthill.

Info

Genetic Testing of African Refugees Raises Outcry From Scientists

Testing
© iStockphoto
Scientists in the United Kingdom are outraged over a new program that seeks to determine asylum seekers' nationalities through DNA and the isotopes present in their hair and fingernails. "Horrifying," "naรฏve," and "flawed" are among the adjectives geneticists and isotope specialists have used to describe the "Human Provenance pilot project," launched quietly in mid-September by the U.K. Border Agency [Science Insider]. The experts say the tests simply aren't accurate enough to pinpoint a person's country of origin.

The program will be tried out on asylum seekers from the Horn of Africa, and will seek to establish whether applicants from Kenya or Ethiopia are masquerading as refugees from war-torn Somalia. Yet scientists say the Border Agency's goals confuse ancestry or ethnicity with nationality. David Balding, a population geneticist at Imperial College London, notes that "genes don't respect national borders, as many legitimate citizens are migrants or direct descendants of migrants, and many national borders split ethnic groups" [Science Insider].