Nature

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Historically, tornadoes have been thought to originate in the clouds, reaching turbulent fingers down to Earth. But now a team of climatologists has demonstrated that this ‘top-down’ model of tornadogenesis might actually be wrong. Yep. Tornadoes, their research has found, form from the ground up. Tornadoes can form surprisingly quickly, in just a couple minutes.
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Shark populations off the east coast of Australia have been declining over the past 55 years with little sign of recovery, according to research published in the journal Communications Biology. Coastal shark numbers are continuing a 50-year decline, contradicting popular theories of exploding shark populations, according to an analysis of Queensland Shark Control Program data.
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Evolution is a fascinating field but can be rife with misunderstanding. One misconception is that evolution has some innate sense of direction or purpose. In reality, evolution is a mindless, plan-free phenomenon, driven into endless possibilities by random mutations, the most successful of which win out. People also often think that every aspect of every