日期:2016-06-30 Human use of artificial light is causing Spring to come at least a week early in the UK, researchers at the University of Exeter in Cornwall have found. New research led by a team of biologists based at the Universitys Penryn campus highlights for t... 阅读全文>>

日期:2016-06-30 As Louisianas wetlands continue to disappear at an alarming rate, a new study has pinpointed the man-made structures that disrupt the natural water flow and threaten these important ecosystems. The findings have important implications for New Orlean... 阅读全文>>

日期:2016-06-30 University of Montana researchers are giving the public its first look at the widespread use of herbicides on federal and tribal land in North America, and they urge land managers to better document it. Herbicides originally were developed to suppre... 阅读全文>>

日期:2016-06-30 In the face of climate change impact and inevitable sea level rise, Cornell and Scenic Hudson scientists studying New Yorks Hudson River estuary have forecast new intertidal wetlands, comprising perhaps 33 percent more wetland area by the year 2100.... 阅读全文>>

日期:2016-06-30 The long-lasting effects of El Nio are projected to cause an intense fire season in the Amazon, according to the 2016 seasonal fire forecast from scientists at NASA and the University of California, Irvine. El Nio conditions in 2015 and early 2016 a... 阅读全文>>

日期:2016-06-28 The potential evolutionary link between hairs in mammals, feathers in birds and scales in reptiles has been debated for decades. Today, researchers of the University of Geneva (UNIGE) and the SIB Swiss Institute of Bioinformatics, Switzerland, demon... 阅读全文>>

日期:2016-06-28 Teacher burnout and student stress may be linked, according to a University of British Columbia study. The study is the first of its kind to examine the connection between teacher burnout and students cortisol levels, which are a biological indicato... 阅读全文>>

日期:2016-06-28 Around 4.6 billion years ago, the universe was a chaos of collapsing gas and spinning debris. Small particles of gas and dust clumped together into larger and more massive meteoroids that in turn smashed together to form planets. Scientists believe... 阅读全文>>

日期:2016-06-27 Research teams on both sides of the Atlantic have shown that precise modeling of the universe and its contents will change the detailed understanding of the evolution of the universe and the growth of structure in it. One hundred years after Einstei... 阅读全文>>

日期:2016-06-27 A new study by Simon Fraser University marine ecologists Jessica Schultz, Ryan Cloutier and Isabelle Ct has discovered that a mass mortality of sea stars resulted in a domino effect on B.C.s West Coast Howe Sound marine ecology. In the summer of 201... 阅读全文>>

日期:2016-06-27 When dormant volcanoes are about to erupt, they show some predictive characteristics--seismic activity beneath the volcano starts to increase, gas escapes through the vent, or the surrounding ground starts to deform. However, until now, there has no... 阅读全文>>

日期:2016-06-27 The genome of the corn plant - or maize, as its called almost everywhere except the US - is a lot more exciting than scientists have previously believed. So says the lead scientist in a new effort to analyze and annotate the depth of the plants gene... 阅读全文>>

日期:2016-06-27 Insects have evolved diverse types of camouflage that have played an important role in their evolutionary success. Debris-carrying, a behavior of actively harvesting and carrying exogenous materials, is among the most fascinating and complex behavio... 阅读全文>>

日期:2016-06-23 A special communication article published online by JAMA Pediatrics explores whether new paradigms in child health may emerge because of Zika virus. Peter J. Hotez, M.D., Ph.D., of the Baylor College of Medicine, Houston, Texas, suggests pediatricia... 阅读全文>>

日期:2016-06-23 Clouds may have a net warming or cooling effect on climate, depending on their thickness and altitude. Artificially formed clouds called contrails form due to aircraft effluent. In a cloudless sky, contrails are thought to have minimal effect on cli... 阅读全文>>

日期:2016-06-23 New research suggests for the first time that wild boars and wart hogs have an internal magnetic compass that helps them orient themselves as they forage for food and inhabit new areas. For the study, investigators observed 1614 wild boars at 31 dif... 阅读全文>>

日期:2016-06-23 In metal-on-metal pairings, both the shell and head of an implant consist of a cobalt-chromium-molybdenum alloy. The release of metal ions into the body has been reported as a result of implant wear. Bone loss (osteolysis) was observed in many cases... 阅读全文>>

日期:2016-06-23 Even with this winters strong El Nio, the Sierra Nevada snowpack will likely take until 2019 to return to pre-drought levels, according to a new analysis led by UCLA hydrology researchers. Additionally, they suggest their new method, which provided... 阅读全文>>

日期:2016-06-23 Fish have evolved the ability to live on land many times, challenging the perception that this extreme lifestyle shift was likely to have been a rare occurrence in ancient times, new UNSW Australia research shows. A fish out of water might seem an e... 阅读全文>>

日期:2016-06-22 A new way of recycling millions of tons of plastic garbage into liquid fuel has been devised by researchers from the University of California, Irvine and the Shanghai Institute of Organic Chemistry (SIOC) in China. Synthetic plastics are a fundament... 阅读全文>>

  • 首页
  • 上一页
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 下一页
  • 末页
  • 3537052