COVID-19 has led to a global economic slowdown that is affecting all four pillars of food security — availability, access, utilization, and stability — according to a new article from researchers at the International Food Policy Research Institute (IFPRI), published in the journal Science. Agricultural and food markets are facing continuous disruptions due to labor ...
A majority of the world’s population lives on low-lying lands near the sea, some of which are predicted to submerge by the end of the 21st century due to rising sea levels. In California, millions of people live along the coast. The most relevant quantity for assessing the impacts of sea-level change on these communities ...
An understanding of climate change during the past millennia is crucial for the scientific attribution of the current warming and the accurate prediction of future climate change. The proxy-based reconstructions and model simulations that offer insights into past temperature changes, however, are subject to large uncertainties. Large-scale climate reconstructions are always related to the uncertainties ...
Lightning is a spectacular natural phenomenon. It is closely associated with the electrification and discharge of thunderstorms. Different types of thunderstorms correspond to different lightning characteristics and charge structures. Their data are proving to be quite useful. But what are their characteristics in different types of thunderstorms? To address this question, scientists attempted to depict ...
COVID-19 has spread rapidly around the world and has limited people’s outdoor activities substantially. Air quality is therefore expected to be improved due to reduced anthropogenic emissions. However, in some megacities, air pollution has not improved as expected and severe haze episodes still occurred during the COVID-19 lockdown. A research team led by Prof. SUN ...
Increasing disturbances and activities in disturbed boreal forest areas greatly contribute to the global degradation of forested ecosystems, with important influences on biodiversity and ecosystem functioning. Thus, understanding the restoration processes of forest biodiversity, community structure, and ecosystem functioning is a key issue in restoration ecology. In a boreal forest, understory vegetation composes the majority ...
Nature is full of colors, from the radiant shine of a peacock’s feathers or the bright warning coloration of toxic frogs to the pearl-white camouflage of polar bears. Except for amber fossils, usually, fine structural detail necessary for the conservation of color is rarely preserved in the fossil record, making most reconstructions of the fossil ...
Active galactic nuclei (AGNs) play a major role in galaxy evolution. Astronomers from SRON and RuG have now used a record sample of galaxies to confirm that galaxy mergers have a positive effect on igniting AGNs. They were able to compile about 10 times more pictures of merging galaxies than previous studies by using a ...
A new study reveals the Chicxulub impact crater may have harbored a vast and long-lived hydrothermal system after the catastrophic impact event linked to the dinosaurs‘ demise 66 million years ago. The Chicxulub impact crater, roughly 180 kilometers in diameter, is the best-preserved large impact structure on Earth and a target for the exploration of ...
A new study by researchers at Duke University and RTI International finds that reusing oilfield water that’s been mixed with surface water for irrigation in the Cawelo Water District of California’s Kern County does not pose major health risks, as some opponents of the practice have feared. Avner Vengosh, professor of water quality and geochemistry ...
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