Home | Tag Archives: Nature.com (page 14)

Tag Archives: Nature.com

Trump’s vaccine-commission idea is biased and dangerous

0SHARESShare Tweet Critics call Donald Trump unpredictable. “Who knows what he will do next?” has become a popular rhetorical question in US politics. And yet, quite often his actions are entirely predictable. The difficulty comes in comprehending them. A prime example is last week’s revelation by environmental lawyer Robert F. Kennedy Jr that president-elect Trump may put together a commission to ...

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Give the public the tools to trust scientists

0SHARESShare Tweet What is truth? How do we find it and does it still carry weight in public debate? Given recent political events, these are important and urgent questions. But of the two industries I work in that are concerned with truth — science and journalism — only the latter has seriously engaged and looked for answers. Scientists need to ...

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Ecology: Trees grow thick skin to survive fire

0SHARESShare Tweet Trees that live in fire-prone areas have evolved thick bark to protect themselves. This trait can be used as an indicator of how resilient a tree species is to increased fire risk under global warming. Adam Pellegrini, now at Stanford University in California, and his colleagues combed the literature for data on the relative thickness of bark for ...

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Neuroscience: How to turn on killer instinct

0SHARESShare Tweet The activation of a particular group of brain cells is all it takes to make mice hunt to kill. The brain’s central amygdala has long been thought to have a role in producing emotions, particularly fear. To activate this brain region, Ivan de Araujo at Yale University in New Haven, Connecticut, and his co-workers engineered mice so that ...

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Climate change: Sea-level rise for centuries to come

0SHARESShare Tweet Atmospheric methane and other short-lived greenhouse gases are set to keep the global sea level rising for several centuries — even after any potential decline or halt in emissions. Greenhouse gases in the atmosphere cause ocean warming and thermal expansion that results in sea-level rise. Reducing emissions of methane and hydrofluorocarbons, which have much shorter atmospheric lifetimes than ...

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Animal behaviour: Faecal odours act as rhino signals

0SHARESShare Tweet White rhinos can learn about each other by sniffing one another’s faeces. Ann & Steve Toon/Alamy Many mammals communicate through smells in their urine. To see whether faeces have a similar role, Courtney Marneweck at the University of KwaZulu-Natal in Pietermaritzburg, South Africa, and her colleagues analysed odours from the faeces of more than 100 wild white rhinos ...

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Chemistry: Molecule gets knotted

0SHARESShare Tweet Scientists have braided a molecule into a knot with eight crossings, the most complex yet made in the lab. Jean-Francois Lemonnier/Univ. Manchester Flexible polymers can twist themselves into complex knots, but scientists have struggled to create all but the simplest structures. David Leigh and his colleagues at the University of Manchester, UK, weaved three organic strands — totalling ...

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Palaeontology: Trilobites laid eggs

0SHARESShare Tweet The discovery that extinct marine organisms called trilobites laid eggs provides the first direct evidence for how they reproduced. Yale Peabody Museum/CC0 1.0 Trilobites lived between 520 million and 250 million years ago, and are one of the earliest known groups of arthropods (invertebrates, including modern insects, with exoskeletons and segmented bodies). Thomas Hegna of Western Illinois University ...

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Base the social cost of carbon on the science

0SHARESShare Tweet Take a step back. Earth is an orb reeling through the emptiness of space, warmed from the inside by molten rock and from the outside by the Sun. Thanks to the wonders of physics, a magnetic shield protects us from the most damaging cosmic radiation, and our exceedingly thin atmosphere forms a protective blanket that keeps the surface ...

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Replication studies offer much more than technical details

0SHARESShare Tweet Purists will tell you that science is about what scientists don’t know, which is true but not much of a basis on which to develop new cancer drugs. Hence the importance of knowledge: how crucial this mutation or that cell-surface receptor really is to cancer growth. These are the findings that launch companies and clinical trials — provided, ...

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