SCIENCE IN THE NEWS DAILY
New Dinosaur May Link S. American, Aussie Dinos
A rare fossil found in Australia suggests dinosaurs were able to trek north across a vast continent, scientists report.
The hundred-million-year-old fossil belonged to a two-legged meat-eater, or theropod, that is closely related to Megaraptor namunhuaiquii, a giant, big-clawed carnivore from Argentina, says a team led by Nathan Smith of the University of Chicago's Field Museum. The discovery could help redraw the world map during the dinosaur era, researchers add.
That's because the newfound Australian dinosaur shows that animals could travel across the prehistoric supercontinent of Gondwana during the Cretaceous period, about 145 to 65 million years ago. This in turn suggests that Gondwana's Southern Hemisphere landmasses broke up later than traditionally thought.
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PODCAST & VIDEO: Engineering Around Extreme Events
Extreme events, such as super floods and hurricanes, are becoming more common, so civil engineers are trying to adapt civil infrastructure such as bridges to these unpredictable and sometimes devastating meteorological events. Engineer Ana Barros discusses how engineering can prepare us for extreme weather events, but also how changing climate and population conditions can affect the ability of infrastructure to hold up over time.
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