Earth Changes
Until now researchers thought that the Desert Ant Cataglyphis fortis, which makes its home in the inhospitable salt pans of Tunisia, was a pure vision-guided insect. But Kathrin Steck, Bill Hansson and Markus Knaden from the Max Planck Institute for Chemical Ecology in Jena, Germany used gas chromatography to verify that desert microhabitats do have unique odour signatures that can guide the ants back to the nest.
Police said the man, an immigrant worker, was struck while working in fields in the buffer zone, about 25 kilometres west of Nicosia.
He was taken to hospital, but he was pronounced dead on arrival.

Greenpeace activists hold a banner during a rally outside the U.S. embassy for Hillary Clinton in Jakarta on Feb. 19.
After years of resistance from the Bush administration, global warming advocates are convinced the time has come for passage of major climate change legislation.
But even with a sympathetic White House and Congress, the years of delay might well have complicated their task as an army of lobbyists assembled to do battle over the issue.
A Center for Public Integrity analysis of Senate lobbying disclosure forms shows that more than 770 companies and interest groups hired an estimated 2,340 lobbyists to influence federal policy on climate change in the past year, as the issue gathered momentum and a bill came to a vote in Congress.
That's an increase of more than 300 percent in the number of global warming lobbyists since 2003, when Congress previously voted on climate change legislation, and means that Washington can now boast more than four climate lobbyists for every member of Congress.
It also means that 15 percent of all Washington lobbyists spent at least some of their time on global warming last year, based on a tally of the total number of influence peddlers on Capitol Hill by the Center for Responsive Politics.
The center estimates that lobbying expenditures on climate change last year topped $90 million. About 130 businesses and interest groups spent more than $23.5 million on lobbying teams solely focused on climate, but that vastly understates the money devoted to the effort.
Some of the snowiest places following Monday's blizzard were McNamee, near Boiestown, which saw more than 65 centimetres of snow fall, as well, Kouchibouguac, on the province's east coast, witnessed 60 centimetres of snow fall.

A Fredericton resident cleans up on Monday after 48 centimetres of snow fell.
Bathurst Mayor Stephen Brunet said the cleanup is continuing from Monday's record-breaking snowfall, one of the worst winter storms he can remember.
"You're driving down the street and you're going down like a snake. You know, there's nothing straight on our streets at all because of the snow," Brunet said.
Additionally, 48 centimetres of snow fell on Fredericton, 37 centimetres on Saint John and 21 centimetres in Moncton.
One of the catastrophic results of global warming always cited by climate change alarmists is the melting of the ice sheets covering Greenland. Some even speculated that global warming had pushed Greenland past a "tipping point" into a scary new regime of wildly heightened ice loss and rapidly rising in sea levels. Now, from the fall meeting of the American Geophysical Union, comes word that Greenland's Ice Armageddon has been called off.
In the late 1990s, streams of ice flowing into the sea from the great Greenland ice sheet had begun speeding up. As the glacial ice faces receded global warming proponents pointed to the shrinking ice cap as proof that catastrophe lay just around the corner. But then came reports of a broad slowdown from a survey of glacier conditions across southeastern Greenland. Researchers reported in 2007 that two of the area's major outlet glaciers - Helheim and Kangerdlugssuaq - had slowed significantly by the summer of 2006. Then at the 2009 AGU meeting, glaciologist Tavi Murray and ten of her colleagues from Swansea University in the United Kingdom reported the results from their 2007 and 2008 surveys.

Helheim Glacier's flow to the sea sped up in 2005, as evidenced by the 5-kilometer retreat of its leading edge, but by 2006 it had slowed back down.
"It has come to an end," Murray said during a session at the meeting. "There seems to have been a synchronous switch-off " of the speed-up, she said. Based on the shape and appearance of the 14 largest outlet glaciers in southeast Greenland, outlet glacier flows have returned to the levels of 2000 nearly everywhere. "There's a pattern of speeding up to maximum velocity and then slowing down since 2005," Murray reported. "It's amazing; they sped up and slowed down together. They're not in runaway acceleration."
As with the NASA Russian temperature debacle last year and the forced recalculation of US surface temperatures for the last century in 2007, the latest problem was discovered after NSIDC received emails from puzzled readers, asking why obviously sea-ice-covered regions were showing up as ice free open ocean. A statement on the NSIDC web site, published February 18, 2009, explains the current faux pas this way:
As some of our readers have already noticed, there was a significant problem with the daily sea ice data images on February 16. The problem arose from a malfunction of the satellite sensor we use for our daily sea ice products. Upon further investigation, we discovered that starting around early January, an error known as sensor drift caused a slowly growing underestimation of Arctic sea ice extent. The underestimation reached approximately 500,000 square kilometers (193,000 square miles) by mid-February. Sensor drift, although infrequent, does occasionally occur and it is one of the things that we account for during quality control measures prior to archiving the data.
Washington, DC - Award-winning Princeton University Physicist Dr. Will Happer declared man-made global warming fears "mistaken" and noted that the Earth was currently in a "CO2 famine now." Happer, who has published over 200 peer-reviewed scientific papers, made his remarks during today's Environment and Public Works Full Committee Hearing entitled "Update on the Latest Global Warming Science."
"Many people don't realize that over geological time, we're really in a CO2 famine now. Almost never has CO2 levels been as low as it has been in the Holocene (geologic epoch) - 280 (parts per million - ppm) - that's unheard of. Most of the time [CO2 levels] have been at least 1000 (ppm) and it's been quite higher than that," Happer told the Senate Committee. To read Happer's complete opening statement click here.
Meanwhile, in Australia, a punishing, record drought was worsened by the nation's worst heat wave and worst wildfires, wherein over 400 conflagrations killed over 200 people (and counting), torched a thousand homes and renewed calls for a country with its environmental head up its ass to finally launch its still-hibernating national warning system.
Those who would argue that these are isolated events do so at their own peril. The more time passes, the more both examples of extreme weather resemble two sides of the same fearsome coin known as catastrophic climate change.
The 1.5-million-year-old footprints display signs of a pronounced arch and short, aligned toes, in contrast to older footprints.
The size and spacing of the Kenyan markings - attributed to Homo erectus - reflect the height, weight, and walking style of modern humans.
The findings have been published in the journal Science.
The footprints are not the oldest belonging to a member of the human lineage. That title belongs to the 3.7 million-year-old Australopithecus afarensis prints found in Laetoli, Tanzania, in 1978.