Search results for "Hannah Bird"

Environment Feb 26, 2025

Atmospheric pollutants surprisingly helpful in offsetting primary productivity decline in Indian Ocean

Air pollution has become an ever-pressing issue since the Industrial Revolution began in the mid-18th century. Progressive urbanization, industrialization and agricultural development over more recent decades have been linked ...

Astrobiology Feb 25, 2025

Geysers on Saturn's icy moon Enceladus may form from a 'mushy zone'

Searching for life on other celestial bodies, or at the very least the necessary components to support it, has been fascinating scientists and enthusiasts for centuries. While planets are the obvious choice, their moons can ...

Earth Sciences Feb 11, 2025

Greenland ice sheet could fully melt after reaching specific tipping point, study finds

Greenland's ice sheet currently spans over 1.7 million square kilometers and is the largest freshwater reservoir in the northern hemisphere. The ice sheet has already lost over a trillion tonnes of its total mass since the ...

Earth Sciences Feb 7, 2025

Heavy metal toxicity found in Chinese port poses risk to seafood safety

Heavy metals naturally occur in the Earth's crust, but human activities can increase their concentration in the environment, including domestic sewage and waste disposal, fumes from vehicle exhausts, fertilizer runoff, mining ...

Earth Sciences Feb 5, 2025

Sahara rainfall historically driven by tropical plumes not monsoons, study finds

Africa is often synonymous with its drylands that cover two-thirds of the continent. Relief is brought through rainfall during the monsoon season, which is vital to help replenish water reserves for communities and wildlife ...

Agriculture Jan 23, 2025

Climate-driven changes have already threatened more than half of Central Europe's productive agricultural landscape

Droughts are a serious consequence of climate change, devastating ecosystems, along with the organisms and communities who inhabit them. Understanding the impact of this upon agricultural productivity is vital to ensure sustainable ...

Evolution Jan 23, 2025

Azraq Basin fossils reveal mammals shrank during Pleistocene-Holocene climate shift

Earth's climate changed dramatically during the Late Pleistocene and Early Holocene 130,000 to 7,000 years ago, when cold glacial cycles transitioned into the current warmer interglacial. Such a climatic evolution had considerable ...

Planetary Sciences Jan 17, 2025

Mars's two distinct hemispheres caused by mantle convection not giant impacts, study claims

Mars has northern and southern hemispheres like Earth, but their defining characteristics are markedly different, a phenomenon known as Martian dichotomy. The Southern Highlands are older, higher in elevation and more cratered ...

Planetary Sciences Jan 17, 2025

Mars's rare disappearing solar wind event explained

Mars's atmosphere and climate are impacted by interactions with solar wind, a stream of plasma comprised of protons and electrons that flows from the sun's outermost atmosphere (corona), traveling at speeds of 400–1,000 kilometers ...

Earth Sciences Jan 16, 2025

Rockfall frequency from French mountains has doubled since Little Ice Age

The Little Ice Age was a period of significant cooling from the early 14th to mid-19th centuries, which saw mean temperatures across the northern hemisphere drop by up to 2°C and the advancement of glaciers.

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