Despite less ozone pollution, not all plants benefit
Wed, 22 Jan 2020 15:43:36 EST
Policies and new technologies have reduced emissions of precursor gases that lead to ozone air pollution, but despite those improvements, the amount of ozone that plants are taking in has not followed the same trend, according to researchers.
Earth's oldest asteroid strike linked to 'big thaw'
Wed, 22 Jan 2020 10:05:46 EST
Scientists have discovered Earth's oldest asteroid strike occurred at Yarrabubba, in outback Western Australia, and coincided with the end of a global deep freeze known as a Snowball Earth. The research used isotopic analysis of minerals to calculate the precise age of the Yarrabubba crater for the first time, putting it at 2.229 billion years old -- making it 200 million years older than the next oldest impact.
Air pollution in New York City linked to wildfires hundreds of miles away
Wed, 22 Jan 2020 08:06:07 EST
A new study shows that air pollutants from the smoke of fires from as far as Canada and the southeastern US traveled hundreds of miles and several days to reach Connecticut and New York City, where it caused significant increases in pollution concentrations.
Missing piece to urban air quality puzzle
Wed, 22 Jan 2020 08:06:00 EST
Air quality models have long failed to accurately predict atmospheric levels of secondary organic aerosol, which comprises a substantial fraction of the fine particulate matter in cities. But researchers have found a missing source of emissions that may explain roughly half of that SOA, closing much of the model-measurement gap.
A model ecosystem fish story
Tue, 21 Jan 2020 13:33:01 EST
Have I got a fish story for you. Any angler beginning a yarn like that usually ends up spinning a tall tale, an exaggeration or bald-faced lie. Researchers, however, have demonstrated that anglers can produce accurate and complex environmental models similar to those of trained scientists.
Feeding the world without wrecking the planet is possible
Tue, 21 Jan 2020 12:40:22 EST
A study now suggests a comprehensive solution package for feeding 10 billion people within our planet's environmental boundaries. Supplying a sufficient and healthy diet for every person whilst keeping our biosphere largely intact will require no less than a technological and socio-cultural U-turn. It includes adopting radically different ways of farming, reduction of food waste, and dietary changes.
Warmer and acidified oceans can lead to 'hidden' changes in species behavior
Tue, 21 Jan 2020 11:30:10 EST
Scientists have shown that the peppery furrow shell (Scrobicularia plana) makes considerable changes to its feeding habits when faced with warmer and more acidified oceans.
Transformational innovation needed to reach global forest restoration goals
Fri, 17 Jan 2020 12:21:19 EST
New research finds that global South countries have pledged the largest areas of land to forest restoration, and are also farthest behind in meeting their targets due to challenging factors such as population growth, corruption, and deforestation.
Mix of stress and air pollution may lead to cognitive difficulties in children
Thu, 16 Jan 2020 15:54:36 EST
Children with elevated exposure to early life stress in the home and elevated prenatal exposure to air pollution exhibited heightened symptoms of attention and thought problems, according to researchers. Early life stress is common in youth from disadvantaged backgrounds who also often live in areas with greater exposure to air pollution.
In death of dinosaurs, it was all about the asteroid -- not volcanoes
Thu, 16 Jan 2020 14:17:08 EST
Volcanic activity did not play a direct role in the mass extinction event that killed the dinosaurs, according to an international team of researchers. It was all about the asteroid.
How anti-sprawl policies may be harming water quality
Thu, 16 Jan 2020 13:22:47 EST
Urban growth boundaries are created by governments in an effort to concentrate urban development -- buildings, roads and the utilities that support them -- within a defined area. These boundaries are intended to decrease negative impacts on people and the environment. However, according to a researcher, policies that aim to reduce urban sprawl may be increasing water pollution.
Air pollution from oil and gas production sites visible from space
Wed, 15 Jan 2020 13:04:48 EST
US and European satellites help scientists measure nitrogen dioxide from drilling, production and flaring.
NASA, NOAA analyses reveal 2019 second warmest year on record
Wed, 15 Jan 2020 13:04:46 EST
According to independent analyses by NASA and the National Oceanic and Atmospheric Administration (NOAA), Earth's global surface temperatures in 2019 were the second warmest since modern recordkeeping began in 1880.
Irrigation temporarily alleviates hot extremes
Wed, 15 Jan 2020 12:06:20 EST
Researchers found evidence that expanding irrigation has dampened anthropogenic warming during hot days, with particularly strong effects over South Asia.
Reconnecting with nature key for sustainability
Wed, 15 Jan 2020 07:56:15 EST
People who live in more built up areas and spend less free-time in nature are also less likely to take actions that benefit the environment, such as recycling, buying eco-friendly products, and environmental volunteering.