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ScienceDaily: Earth & Climate News |
| Solar hydrogen for Antarctica: Advantages of thermally coupled approach Posted: 02 Jul 2021 12:43 PM PDT Their conclusion: in extremely cold regions, it can be considerably more efficient to attach the PV modules directly to the electrolyser, i.e. to thermally couple them. This is because the waste heat from the PV modules increases the efficiency of electrolysis in this environment. The results of this study are also relevant for other cold regions on Earth, such as Alaska, Canada, and high mountain regions, for example. In these places, solar hydrogen could replace fossil fuels such as oil and petrol. |
| Air pollution during pregnancy may affect growth of newborn babies Posted: 02 Jul 2021 12:43 PM PDT Maternal exposure to air pollution during pregnancy has often been linked to adverse effects on the health of the newborn. However, there are very few studies on the subject. A study has just concluded that the stages most sensitive to air pollution are the early and late months of pregnancy. |
| A globally important microbial process hidden on marine particles Posted: 02 Jul 2021 12:43 PM PDT Nitrogen is essential for all life on Earth. In the global oceans however, this element is scarce, and nitrogen availability is therefore critical for the growth of marine life. Some bacteria found in marine waters can convert nitrogen gas (N2) to ammonia (known as N2 fixation), and thereby supply the marine food web with nitrogen. |
| Solving a long-standing mystery about the desert's rock art canvas Posted: 02 Jul 2021 12:42 PM PDT Petroglyphs are carved in a material called rock varnish, the origins of which have been debated for years. Now, scientists argue it's the result of bacteria and an adaptation that protects them from the desert sun's harsh rays. |
| Is global plastic pollution nearing an irreversible tipping point? Posted: 01 Jul 2021 11:09 AM PDT Current rates of plastic emissions globally may trigger effects that we will not be able to reverse, argues a new study. According to the authors, plastic pollution is a global threat, and actions to drastically reduce emissions of plastic to the environment are 'the rational policy response.' |
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