Environment

ENTOMOLOGY

Terrestrial insects in decline

Unprecedented study on the demographic evolution of terrestrial insects points to a decline in individual numbers and species diversity

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CLIMATOLOGY

Global warming could reach 1.5 °C within nine years

Global warming will reach the threshold of 1.5 ºC in nine years if there is no change in CO2 emissions

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COVER

Science with the public

People without academic experience contribute to data collection and knowledge production

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Environment

Nutrients from the Sahara to the Amazon

Dust from the Sahara is carried by strong winds to the Amazon

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Ecology

Tree health

Company develops technology to assess tree health by imaging the roots and trunk

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Science

Pig farming has the biggest environmental footprint

Study determines the pressure placed on natural resources by food production worldwide

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AGRICULTURE

Increasing soy productivity is essential to curbing deforestation

Measures could prevent 5.7 million hectares of vegetation in the Amazon and Cerrado from being converted into cropland over the next 15 years

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Biodiversity

Fires in the Pantanal disproportionately affected jaguars

Wildfires in the Pantanal in 2020 had a severe impact on biodiversity

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Environment

Fire consumes vegetation on icy Siberian soil

Wildfires on frozen ground in Siberia are expected to increase exponentially by the middle of the century

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FORESTRY ENGINEERING

New technique used to reforest Brumadinho

The innovative experimental technique uses hormones and grafting to reproduce native trees and speed up their flowering time in areas of socioenvironmental disasters

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Environment

The trash trail to the sea

UN study names the Brazilian cities that dispose of the most plastic waste and the rivers that transport it

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Environment

Brazil dumps 3.44 million tons of plastic waste into the sea every year

Studies reveal the impact of plastic bags, bottles, straws, and other polymeric materials on marine organisms and ecosystems

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ECOLOGY

Freshwater mangroves identified near the mouth of the Amazon River

Study expands the area occupied by this rare type of coastal ecosystem on the border between Pará and Amapá

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COVER

Emissions of carbon dioxide—the most abundant greenhouse gas—double in the Amazon

Study indicates that increased deforestation resulted in the rainforest emitting more carbon than it absorbed in 2019 and 2020

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Archaeology

Pesticides affecting the past

Chemicals used to combat agricultural pests can also damage archaeological artifacts

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