Riviste scientifiche

Leonardo da Vinci saw a whale fossil that opened his mind to deep time

New Scientist - Ve, 31/07/2020 - 12:00
Renaissance-era polymath Leonardo da Vinci may have seen a whale fossil in his youth, prompting him to speculate that Earth was enormously old

Dark matter map hints at cracks in our understanding of the universe

New Scientist - Ve, 31/07/2020 - 10:00
A new survey suggests dark matter is more evenly spread through space than we had thought, which might mean we don’t fully understand how gravity works on large scales

UK temperatures broke records in 2019 as climate change took hold

New Scientist - Ve, 31/07/2020 - 02:01
Last year saw the hottest temperature ever recorded in the UK at 38.7°C. All 10 of the warmest years in the UK since records began in 1884 occurred after 2002

[Comment] Political and institutional perils of Brazil's COVID-19 crisis

The Lancet - Ve, 31/07/2020 - 00:30
Political scientists would presume that during a pandemic, political leaders will seek to use the situation to increase their power and electability. In the case of Brazil, however, President Jair Bolsonaro has not been able to achieve this, partly due to the government's poor policy response to COVID-19, which is shaped by Bolsonaro's political ideology. Yet Bolsonaro operates within a strong democratic institutional context that limits his policy authority. Brazil's Federal Supreme Court, for example, consistently upholds state physical distancing policies that the Bolsonaro administration opposes.

Deep-sea anglerfish fuse bodies to mate thanks to an odd immune system

New Scientist - Gi, 30/07/2020 - 21:00
Some male anglerfish fuse to the much larger females to mate – they can do so because they don’t recognise their partner’s tissue as foreign material that should be attacked

We can now predict dangerous solar flares a day before they happen

New Scientist - Gi, 30/07/2020 - 21:00
Large solar flares can put astronauts’ health at risk and damage satellites, but we haven’t had an early warning system for them – until now

Seal lice can survive the pressure found 4000 metres under the sea

New Scientist - Gi, 30/07/2020 - 20:36
When elephant seals go on long dives, they can reach thousands of metres below the ocean’s surface – and the lice they carry with them can withstand the intense pressure there

Covid-19 news: 70 per cent of people wearing face coverings in the UK

New Scientist - Gi, 30/07/2020 - 19:30
The latest coronavirus news updated every day including coronavirus cases, the latest news, features and interviews from New Scientist and essential information about the covid-19 pandemic

These are the 12 ways you can drastically cut your dementia risk

New Scientist - Gi, 30/07/2020 - 19:30
Up to 40 per cent of dementia cases could be prevented or delayed through lifestyle measures like exercising, socialising and not smoking, says a major review

[The Lancet Commissions] Dementia prevention, intervention, and care: 2020 report of the Lancet Commission

The Lancet - Gi, 30/07/2020 - 18:30
The number of older people, including those living with dementia, is rising, as younger age mortality declines. However, the age-specific incidence of dementia has fallen in many countries, probably because of improvements in education, nutrition, health care, and lifestyle changes. Overall, a growing body of evidence supports the nine potentially modifiable risk factors for dementia modelled by the 2017 Lancet Commission on dementia prevention, intervention, and care: less education, hypertension, hearing impairment, smoking, obesity, depression, physical inactivity, diabetes, and low social contact.

Extreme rising seas could wipe out assets worth $14 trillion by 2100

New Scientist - Gi, 30/07/2020 - 18:00
Coastal floods wrought by rising seas could affect tens of millions more people and wipe out assets worth trillions of dollars by the end of the century, if the world fails to prevent the worst-case climate change scenario

How refugee camps in Bangladesh are being defended against covid-19

New Scientist - Gi, 30/07/2020 - 14:00
An alarming mathematical model sparked efforts to ramp up testing and defend one of the world's largest refugee camps from the coronavirus. Now the lessons learned are being tried elsewhere

Finding coronavirus superspreaders may be key to halting a second wave

New Scientist - Gi, 30/07/2020 - 13:40
The R number for coronavirus has had a lot of attention, but we also need to understand the K number – the variability in how many people one infects – to stop superspreading

Extreme heat from the sun is baking a thin crust on Mercury’s surface

New Scientist - Gi, 30/07/2020 - 12:00
Mercury's surface should be powdery like Earth's moon, but the extreme heat it experiences from being close to the sun may be baking it into a thin, hard crust

Lyme disease vaccine found to be safe and effective in clinical trial

New Scientist - Gi, 30/07/2020 - 10:00
A vaccine against Lyme disease that is safe and stimulated immune protection in 82 to 96 per cent of clinical trial participants could be available by 2025

Correction: Modelled health benefits of a sugar-sweetened beverage tax across different socioeconomic groups in Australia: A cost-effectiveness and equity analysis

PLoS Medicine - Me, 29/07/2020 - 23:00

by Anita Lal, Ana Maria Mantilla-Herrera, Lennert Veerman, Kathryn Backholer, Gary Sacks, Marjory Moodie, Mohammad Siahpush, Rob Carter, Anna Peeters

We’ve finally figured out where Stonehenge’s giant boulders came from

New Scientist - Me, 29/07/2020 - 21:00
Most of the 50 huge boulders used to build Stonehenge’s iconic architecture have a chemical composition that suggests they came from a site 25 kilometres away

Half of Nobel prizes in science go to just five research fields

New Scientist - Me, 29/07/2020 - 21:00
Scientists in just five research fields – including neuroscience and atomic physics – scooped up more than half of the Nobel prizes awarded for science in recent decades

Boosting gut microbes helps protect mice against Alzheimer’s disease

New Scientist - Me, 29/07/2020 - 21:00
A prebiotic supplement that promotes good gut bacteria seems to protect against an Alzheimer’s-like disease in mice and will soon be tested in a clinical trial

Covid-19 news: Young people may be driving spikes in cases, says WHO

New Scientist - Me, 29/07/2020 - 20:30
The latest coronavirus news updated every day including coronavirus cases, the latest news, features and interviews from New Scientist and essential information about the covid-19 pandemic
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