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ScienceDaily: Top Environment News |
| Fertility:Key protein helps sperm do their job in timely fashion Posted: 20 Aug 2021 08:11 AM PDT Researchers detail how a ubiquitous signaling molecule plays a critical role in male fertility, orchestrating key steps that promote sperm motility, survival and fertilization success. |
| New fossils show what the ancestral brains of arthropods looked like Posted: 20 Aug 2021 08:11 AM PDT Rare fossils preserving the brains of creatures living more than half a billion years ago shed new light on the evolution of arthropods such as insects and crustaceans. |
| Biodiversity: Land use – Threat to and opportunity for bumblebees Posted: 20 Aug 2021 08:11 AM PDT Bumblebees largely contribute to the pollination of crops. However, they are threatened by land use changes due to climate change. Long-term simulations have now shown that smart land management may stabilize some species. |
| Female and young walruses depend on disappearing Arctic sea ice for food sources Posted: 20 Aug 2021 08:11 AM PDT A new study shows that disappearing sea ice is a significant element of the food web supporting female walruses and their dependent young in the Arctic's Chukchi Sea. Researchers were able to trace biomarkers that are unique to algae growing within sea ice to connect marine mammals with a food source that is rapidly diminishing in the face of climate change. |
| Cloud shadows cue mini-migrations Posted: 20 Aug 2021 08:11 AM PDT A new study shows that zooplankton swim up and down repeatedly within the ocean's twilight zone due to subtle changes in daylight intensity, with implications for deep-sea ecology and the Earth's carbon cycle. |
| Hundreds of Cape Fur seals entangled in fishing lines and nets every year Posted: 20 Aug 2021 08:10 AM PDT Fishing line and nets are having a major impact on Cape fur seals, the most common marine mammal observed around the coastline of South Africa and Namibia, where they are endemic. The first results from an ongoing study, initiated in 2018, shows that a high number of affected animals are pups and juveniles, which were mainly entangled around the neck with fishing line, causing horrific injuries and resulting in a slow, painful death. |
| Evolution now accepted by majority of Americans Posted: 20 Aug 2021 08:10 AM PDT The level of public acceptance of evolution in the United States is now solidly above the halfway mark, according to a new study based on a series of national public opinion surveys conducted over the last 35 years. |
| Integrative approach by biologists increases accuracy of mosquito vector surveillance Posted: 20 Aug 2021 08:10 AM PDT A team of researchers has developed an integrative approach that increases the accuracy of mosquito surveillance and management. The two-pronged strategy boosts accuracy in sampling by including mosquito larvae, and species identification using short DNA sequences. |
| Seeing both the forest and the trees: Trans-scale scope shows big picture of tiny targets Posted: 20 Aug 2021 06:34 AM PDT Researchers built a microscope system that can image over a million cells at once. The technology allowed the team to simultaneously observe the actions of individual cells as well as the global features of cell populations. This research may significantly increase the ability of scientists to study rare cellular functions. |
| Opening the climate change forecasting toolbox Posted: 20 Aug 2021 06:34 AM PDT It is not easy to predict how animals -- from insects to fish -- are going to respond to climate change and especially extremes of temperature. This lack of understanding hinders our ability to predict the vulnerability of these animals to climate change. Scientists now make several proposal on how to improve the current, widely adopted thermal vulnerability index. |
| Researchers help track the growth of ginseng forest farming in Pennsylvania Posted: 19 Aug 2021 04:50 PM PDT There is good and bad news about ginseng collection and production in Pennsylvania, and likely much of Appalachia, according to a new study. |
| Effect of ‘eddy killing’ in oceans is no longer a matter of guesswork Posted: 19 Aug 2021 04:50 PM PDT Applying a new coarse-graining, spatial method of analysis to satellite imagery, scientists provide a direct measure of the impact of wind driven eddy-killing on the kinetic energy of ocean currents -- a continual loss of 50 gigawatts, equivalent to the detonation of a Hiroshima nuclear bomb every 20 minutes, year round. |
| Nutrient-rich human waste poised to sustain agriculture, improve economies Posted: 19 Aug 2021 04:08 PM PDT The future connection between human waste, sanitation technology and sustainable agriculture is becoming more evident. According to a civil and environmental engineering professor, countries could be moving closer to using human waste as fertilizer, closing the loop to more circular, sustainable economies. |
| More research needed into microbes that live in and on sea creatures Posted: 19 Aug 2021 11:28 AM PDT Experts discuss the growing evidence that beneficial members of microbiomes play critical roles in diverse marine ecosystems, identifying areas where there are still major knowledge gaps. |
| Scientists harness human protein to deliver molecular medicines to cells Posted: 19 Aug 2021 11:27 AM PDT Researchers have developed a new way to deliver molecular therapies to cells. The system, called SEND, can be programmed to encapsulate and deliver different RNA cargoes. |
| White clover’s toxic tricks traced to its hybridization Posted: 19 Aug 2021 11:27 AM PDT The common weed known as white clover releases toxic cyanide when its leaf tissues are damaged. This chemical defense, a response called cyanogenesis, helps it to deter insect pests. Research shows how white clover developed its anti-herbivory superpower with input from both of its seemingly innocuous parents. |
| Controlling carbs and fat: Learning from the fruit fly Posted: 18 Aug 2021 10:05 AM PDT Researchers have identified midgut-derived Neuropeptide F as a key regulator of sugar and lipid metabolism in the fruit fly, Drosophila melanogaster. Its hormonal actions are mediated through glucagon-like and insulin-like hormones in a manner similar to incretins in mammals. Further elucidation of these metabolic functions and their underlying genetic mechanisms may advance research on conditions that are related to incretin disturbance such as obesity and type 2 diabetes. |
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