Posts tagged Pollution

Ozone threatens food security

By Neena Bhandari

Sydney, 24.06.2021 (SciDev.Net): Tropospheric and surface ozone pollution pose significant threats to global crop production and food security, but farmers are largely unaware of its impact on agriculture and damage to ecosystems, say scientists.

According to scientists, ozone, as an air pollutant, is highly oxidising and damages plant tissues. But because it is an invisible, odourless gas that often co-occurs with other stresses, such as heat stress, farmers do not directly experience it.

Baerbel Sinha, head of the Department of Earth and Environmental Sciences at the Indian Institute of Science Education and Research, in Mohali, India, says: “If one wants to look at where ozone is possibly disturbing the economics on a large scale, and where one may also be able to educate farmers better, it would be the legumes — soybean, chickpeas and beans in general are very ozone sensitive, their prices are not regulated and they display visible ozone damage on the leaf.”

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© Copyright Neena Bhandari. All rights reserved. Republication, copying or using information from neenabhandari.com content is expressly prohibited without the permission of the writer and the media outlet syndicating or publishing the article.

New tool to find giant base metal deposits

By Neena Bhandari

Sydney, 08.07.2020 (SciDev.Net): Scientists have discovered a new tool to predict the location of base metal deposits, which are buried too deep beneath the Earth’s surface to be found using current exploration methods. This augurs well for targeted mining of metals, such as copper, lead, zinc, which are much in demand for their use in renewable energies.

The study, published on 29th June 2020 in the journal Nature Geoscience, found that 85 percent of all known base metal deposits and 100 percent of all “giant” deposits (those holding more than 10 million tons of metal) hosted in sedimentary basins are located on the edges of cratons – older regions of the continents, which are generally on thicker lithosphere, the rigid outermost cladding of the planet comprising the crust and upper mantle.

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© Copyright Neena Bhandari. All rights reserved. Republication, copying or using information from neenabhandari.com content is expressly prohibited without the permission of the writer and the media outlet syndicating or publishing the article.