Massive predators like Albertosaurus and Tyrannosaurus rex may have been at the top of the food chain, but they were not the only meat-eating dinosaurs to roam North America, according to Canadian researchers who have discovered the smallest dinosaur species on the continent to date. Their work is also helping re-draw the picture of North America's ecosystem at the height of the dinosaur age 75 million years ago.
Czar Nicholas II, eldest son of Tsar Alexander III, succeeded hs father in 1894 and, while he wasn't the most incompetent leader in the history of Russia, much less all of Europe, he was without question a disaster, losing a war to Japan and ordering the army to shoot at citizens who protested the poor conditions they lived under. It's no surprise anyone wanted him gone. A crazy shrew of a wife under the spell of Rasputin didn't help his decision-making prowess.
That guy who gets in the elevator reeking of Drakkar Noir is nothing new - the Ancient Egyptians cherished their fragrant scents, too. In a new part of its permanent exhibition, Bonn University's Egyptian Museum has on display a particularly well preserved example of that.
Screening this 3,500-year-old flacon with a computer tomograph, scientists at the university detected the desiccated residues of a fluid, which they now want to submit to further analysis. They might even succeed in reconstructing this scent.
In the early parts of the decade, German and British intelligence said that Iraq had acquired weapons of mass destruction and were on their way to nuclear capability. The American CIA agreed. Saddam Hussein, in maybe the stupidest bluff of this century (there's still a long way to go), refused to let UN inspectors investigate thoroughly, perhaps thinking if the world believed he had nuclear capability, they would lift sanctions. His mistakes cost him a wealthy dictatorship (though gold painted fixtures remain a puzzle to anyone who visits his many palaces) and, eventually, his life.
Sharks are among the most popular animals featured in television and cinema. And today among sharks, the undisputed king is the great white, a giant predator that can exceed 20 feet in length. Despite the popularity of great whites, relatively little is known about their biology, and even less is known about their evolutionary origins. A new 4-million-year-old fossil from Peru described in the Journal of Vertebrate Paleontology provides important evidence suggesting the shark’s origins may be more humble than previously believed.
If the Higgs boson, whatever that will turn out to be, is hiding, wherever it may be found continues to shrink.
The latest analysis of data from the CDF and DZero collider experiments at Fermilab has now excluded a significant fraction of the allowed Higgs mass range established by earlier measurements. Those experiments predict that the Higgs particle should have a mass between 114 and 185 GeV/c2. Now the CDF and DZero results carve out a section in the middle of this range and establish that it cannot have a mass in between 160 and 170 GeV/c2.