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ScienceDaily: Earth & Climate News |
| The case for onboard carbon dioxide capture on long-range vehicles Posted: 18 Aug 2021 12:37 PM PDT A research team offers a practical way to make ships CO2 neutral -- or even CO2 negative -- with CO2-capturing solid oxide fuel cells. After 'burning' traditional carbon-based fuels, the fuel cell generates concentrated CO2 that can be stored on-board the ship. From there, the CO2 can either be sequestered or recycled into a renewable hydrocarbon fuel. |
| The fewer forests, the more space giant anteaters need, study finds Posted: 18 Aug 2021 12:37 PM PDT Giant anteaters living in less forested habitats make use of larger home ranges, according to a new study. This behavior may allow them to incorporate forest patches into their territory, the authors say. |
| Emberometer could gauge threat of wildfire-spreading embers Posted: 18 Aug 2021 12:32 PM PDT As wildfire fronts advance through landscapes or communities on the ground, they also attack from above, launching volleys of glowing embers into the air. Also known as firebrands, these specks of burning debris can glide for up to 40 kilometers (approximately 24 miles) before landing and can cause up to 90% of home and business fires during wildfires. |
| Package delivery robots' environmental impacts: Automation matters less than vehicle type Posted: 18 Aug 2021 10:52 AM PDT Whether a robot or a person delivers your package, the carbon footprint would essentially be the same, according to a new study that could help inform the future of automated delivery as the pandemic fuels a dramatic rise in online shopping. |
| Protecting largest, most prolific fish may boost productivity of fisheries Posted: 18 Aug 2021 10:52 AM PDT Management of many of the largest fisheries in the world assumes incorrectly that many small fish reproduce as well as fewer large ones with similar total masses, a new analysis has found. That can lead to overharvesting the largest, most prolific fish that can contribute the most to the population. |
| Urban lights keep insects awake at night Posted: 18 Aug 2021 10:05 AM PDT New research sheds light on the effect urbanization has on the flesh fly species Sarcophaga similis. Through a series of laboratory and in-field experiments, scientists show that an increase in nighttime illumination and temperature, two of the major characteristics of urbanization, can postpone S. similis hibernation anywhere from 3 weeks to a month. |
| Scientists reveal how landmark CFC ban gave planet fighting chance against global warming Posted: 18 Aug 2021 10:05 AM PDT New modelling by the international team of scientists paints a dramatic vision of a scorched planet Earth without the Montreal Protocol, what they call the 'World Avoided'. This study draws a new stark link between two major environmental concerns -- the hole in the ozone layer and global warming. The research team reveals that if ozone-destroying chemicals, which most notoriously include CFCs, had been left unchecked then their continued and increased use would have contributed to global air temperatures rising by an additional 2.5°C by the end of this century. |
| Leaky sewers are likely responsible for large amounts of medications in streams Posted: 18 Aug 2021 05:40 AM PDT Pharmaceutical compounds can harm the environment. However, in waterways that don't receive treated wastewater, these pollutants aren't expected to be present. Now, researchers have found that amounts of some medications carried by a stream in Baltimore were substantial, despite generally low concentrations over the course of a year. Because wastewater plants don't impact this stream, the high loads are likely coming from leaking sewer pipes, they say. |
| Thwaites glacier: Significant geothermal heat beneath the ice stream Posted: 18 Aug 2021 05:39 AM PDT Ice losses from Thwaites Glacier in West Antarctica are currently responsible for roughly four percent of the global sea-level rise. This figure could increase, since virtually no another ice stream in the Antarctic is changing as dramatically as the massive Thwaites Glacier. Until recently, experts attributed these changes to climate change and the fact that the glacier rests on the seafloor in many places, and as such comes into contact with warm water masses. But there is also a third, and until nowone of the most difficult to constrain, influencing factors. In a new study, German and British researchers have shown that there is a conspicuously large amount of heat from Earth's interior beneath the ice, which has likely affected the sliding behavior of the ice masses for millions of years. This substantial geothermal heat flow, in turn, are due to the fact that the glacier lies in a tectonic trench, where the Earth's crust is significantly thinner than it is e.g. in neighboring East Antarctica. |
| Autophagy: The unlikely hero that balances zinc and iron in plants Posted: 18 Aug 2021 05:39 AM PDT Nutrient imbalances can adversely impact crop health and agricultural productivity. The trace elements zinc and iron are taken up by the same 'transporters' in plants; so, zinc deficiency can result in excess uptake of iron. How does the plant cope with this imbalance? Researchers reveal that autophagy, the process of intracellular self-degradation, may have an unexpected role in restoring zinc-iron balance in plants. |
| Bee flight suffers under temperature extremes Posted: 18 Aug 2021 05:39 AM PDT Rising temperatures could help some northern-latitude bees fly better, but more frequent extreme weather events could push them past their limits. |
| Scientists develop alternative cement with low carbon footprint Posted: 18 Aug 2021 05:39 AM PDT Researchers have developed a climate-friendly alternative to conventional cement. Carbon dioxide (CO2) emissions can be reduced during production by up to two thirds when a previously unused overburden from bauxite mining is used as a raw material. The alternative was found to be just as stable as the traditional Portland cement. |
| Combining perovskite with silicon, solar cells convert more energy from sun Posted: 17 Aug 2021 08:14 AM PDT To fully harness the potential of sunlight, scientists have been trying to maximize the amount of energy that can be extracted from the sun. Researchers now describe how pairing metal halide perovskites with conventional silicon leads to a more powerful solar cell that overcomes the 26% practical efficiency limit of using silicon cells alone. Perovskites fulfill all the optoelectronic requirements for a photovoltaic cell, and they can be manufactured using existing processes. |
| Western chimpanzees are threatened by lack of regulated human development Posted: 17 Aug 2021 08:14 AM PDT New research has found that the habitats of West African (western) chimpanzees are threatened due to inadequate legislative protection from human development. |
| New clean energy tech extracts twice the power from ocean waves Posted: 17 Aug 2021 07:27 AM PDT New prototype tech can double the power harvested from ocean waves, an advance that could finally make wave energy a viable renewable alternative. |
| Humble pond plant duckweed may help researchers to develop better crops Posted: 16 Aug 2021 01:13 PM PDT Duckweed, a tiny freshwater floating plant, is an excellent laboratory model for scientists to discover new strategies for growing hardier and more sustainable crops in an age of climate change and global population boom, a new study finds. |
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