Posts

October 20, 2014

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12:50 PM | Earth's Magnetic Field Could Flip Within a Lifetime
A predicted flip flop in Earth's magnetic field could happen sooner than scientists thought.

October 06, 2014

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12:00 PM | Ongoing gene flow among Australian alpine Poa
Recently radiated groups pose a taxonomic challenge even with extensive molecular data, as they may be genetically differentiated only at small and/or patchy regions of the genome. Griffin and Hoffmann investigate species’ structure among the Poa that dominate the Australian alpine zone, which have radiated in the last 0.5–1.2 million years. Using a Bayesian approach to […]

September 25, 2014

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7:03 PM | Earth’s Magnetic Field Is Weakening 10x Faster Than Previously Thought
We often take it for granted that the North Pole is at the top of the globe and the South Pole is at the bottom. But in reality, these poles have flip-flopped a number of times in Earth’s history, the most recent being about 780,000 years ago. Each flip is preceded by a gradual weakening of the magnetic field. Since the early 2000s, scientists have been predicting that the next polar flip would happen in the next 5,000 years or so, based
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