ScienceDaily: Top Science News |
- Climate change and air pollution will combine to curb food supplies
- Trees save lives, reduce respiratory problems
- Climate Change Increases Risk of Crop Slowdown in Next 20 Years
- Invertebrate numbers nearly halve as human population doubles
- Geography of global electronic waste ('e-waste') burden
- Intestinal parasites are 'old friends,' researchers argue
| Climate change and air pollution will combine to curb food supplies Posted: 27 Jul 2014 01:57 PM PDT Many studies have shown the potential for global climate change to cut food supplies. But these studies have, for the most part, ignored the interactions between increasing temperature and air pollution -- specifically ozone pollution, which is known to damage crops. A new study shows that these interactions can be quite significant, suggesting that policymakers need to take both warming and air pollution into account in addressing food security.       |
| Trees save lives, reduce respiratory problems Posted: 25 Jul 2014 01:35 PM PDT In the first broad-scale estimate of air pollution removal by trees nationwide, scientists have calculated that trees are saving more than 850 human lives a year and preventing 670,000 incidences of acute respiratory symptoms. The study considered four pollutants for which the U.S. EPA has established air quality standards: nitrogen dioxide, ozone, sulfur dioxide, and particulate matter less than 2.5 microns (PM2.5) in aerodynamic diameter.  |
| Climate Change Increases Risk of Crop Slowdown in Next 20 Years Posted: 25 Jul 2014 11:44 AM PDT The world faces a small but substantially increased risk over the next two decades of a major slowdown in the growth of global corn and wheat yields because of climate change, according to new research. Such a slowdown would occur as global demand for crops rapidly increases.  |
| Invertebrate numbers nearly halve as human population doubles Posted: 24 Jul 2014 11:16 AM PDT Invertebrate numbers have decreased by 45 percent on average over a 35 year period in which the human population doubled, reports a study on the impact of humans on declining animal numbers. This decline matters because of the enormous benefits invertebrates such as insects, spiders, crustaceans, slugs and worms bring to our day-to-day lives, including pollination and pest control for crops, decomposition for nutrient cycling, water filtration and human health.  |
| Geography of global electronic waste ('e-waste') burden Posted: 23 Jul 2014 08:11 AM PDT As local and national governments struggle to deal with ever-growing piles of electronic waste, scientists are now refining the picture of just how much there is and where it really ends up. Their study found that nearly a quarter of e-waste that developed countries discard floods into just seven developing countries -- with major potential health risks for the people who live there.  |
| Intestinal parasites are 'old friends,' researchers argue Posted: 23 Jul 2014 08:11 AM PDT Intestinal parasites such as tapeworms, hookworms and a protist called Blastocystis can be beneficial to human health, according to a new paper that argues we should rethink our views of organisms that live off the human body. To prove the point, a co-author even ingested three developmental stages of a large species of tapeworm called Diphyllobothrium latum. After more than a year with the tapeworms, which might have grown to be as long as four metres each by now, he says he feels fine.  |
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