Notes

Climate change

1.5 billion m3 of rainfall in Rio Grande do Sul

1.5 billion m³ of rain fell in Porto Alegre and the surrounding region in May 2024

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Public policies

Deadly African roads

Africa leads in road deaths due to structural problems, such as poor roads and lack of law enforcement

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Genetics

Loss of genetic diversity encourages extinction

Decline in genetic diversity may have contributed to the extinction of the Neanderthals

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Energy

Recyclable solar panels

Swedish scientists create recyclable perovskite solar cell

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Nutrition

Unsupervised dieting

One in ten children and teenagers presents some form of disordered eating behavior

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Astrophysics

The wandering Sun and the cooling Earth

Solar System passed through the Orion constellation, which may have influenced Earth's climate

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Ethology

Wolves domesticated themselves in search of food

Wild wolves approached humans in search of food and domesticated themselves

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Environment

Rondônia in flames 43,000 years ago

Macrocharcoal reveals forest fires in Rondônia 43,000 years ago

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Obstetrics

More twins from late motherhood

Late pregnancy leads to higher chance of twins or triplets

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Astrophysics

Our neighboring galaxy in detail

James Webb Telescope details neighboring galaxy of Andromeda

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Zoology

Climate caused megafauna extinction

Lack of rain accelerated extinction of megafauna in Northeast Brazil

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Physiology

Immune cells carry microplastics to the brain

Ingested microplastics can reach the brain within hours

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Agriculture

Pesticides in the rain

Rainwater in agricultural areas may contain pesticides

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Physics

Traces of a super-energetic neutrino under the sea

Ultra-energetic neutrino detected in the Mediterranean

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Biodiversity

The cries of snakes

Female snakes emit high-pitched sounds when threatened

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Geophysics

Earth’s not so solid core

Surface of Earth's inner core may be viscous rather than solid

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Public health

Teenagers, get moving!

Drunkenness among Brazilian teenagers higher than in neighboring countries

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Zoology

India, home of the tigers

India's wild tiger population doubles in just over a decade

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Genetics

Sunburn damages RNA

Sunburn damages RNA, not just DNA

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Climate

Trees cool the environment, but they also heat it up

Urban trees have a greater cooling effect in hot, dry cities

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Epidemiology

Stay away from wild birds

US reports first human death linked to highly pathogenic strain of H5N1 virus

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Policy

US withdraws from Paris Agreement and WHO

US President signs executive orders withdrawing the country from Paris Agreement and WHO

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Renewable energy

Flying high, day and night, on solar power

Solar-powered aircraft flies for 24 hours, climbing 20 km and crossing the stratosphere

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Physics

Magnetic North changing location

Magnetic North Pole is moving away from Canada towards Siberia

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Environment

How to harness methane

US institute develops catalyst capable of converting methane into useful compounds

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Public health

Lesser-known dangers of alcohol

US Surgeon General warns of link between alcohol consumption and seven types of cancer

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Agriculture

Greater exports, lower biodiversity

Increase in exports to major consumer markets contributes to biodiversity loss

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Animal behavior

Social isolation leads to disorders

Chimpanzees raised in isolation face challenges in social interaction

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Astrophysics

Space centaur

James Webb Telescope captures detail of comet that behaves like an asteroid

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Medicine

Obesity drug disappoints

Anti-obesity drug proves less effective than hoped in clinical trial

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