Feed aggregator

Gore’s fourth-annual 24-hour live broadcast of Climate ‘reality’ kicks off

Climate Depot - 5 hours 7 min ago
http://ecowatch.com/2014/09/16/24-hour-reality-al-gore-climate-change/

Public needs radiation awareness

World Nuclear News - 10 hours 6 min ago
Educating the public on the potential health effects of radiation should be a long-term process and not just take place in the aftermath of a major nuclear accident, a panel of radiation protection experts agreed.

New trends in financing

World Nuclear News - 10 hours 20 min ago

Financing nuclear power plants is "challenging but viable" with new financing trends emerging to support nuclear new build, Nadira Barkatullah, director of economic regulation at the Regulation and Supervision Bureau of the United Arab Emirates said.

Mainstream Journalism Remains Catatonic As Antarctica Sees Year-Long Series Of Record High Sea Ice Extents

Climate Depot - Mon, 09/15/2014 - 18:37
Mainstream Journalism Remains Catatonic As Antarctica Sees Year-Long Series Of Record High Sea Ice Extents http://notrickszone.com/2014/09/15/mainstream-journalism-remains-catatonic-as-antarctica-sees-year-long-series-of-record-high-sea-ice/ Here’s proof that mainstream media journalism is either sloppy and just too lazy to check the data themselves, or is catatonically stuck in their now 18-year long illusion of global warming. Recently a number of leading media outlets trumpeted (loudly) [...]

Climatologist Dr. Roy Spencer: What if the Global Warming ‘Pause’ was ‘Fast Forward’ Instead?

Climate Depot - Mon, 09/15/2014 - 18:34
What if the Global Warming “Pause” was “Fast Forward” Instead? http://www.drroyspencer.com/2014/09/what-if-the-global-warming-pause-was-fast-forward-instead/ I’d like to take you through a little thought experiment. We all know that global warming has been on hiatus – set on pause – however you like to characterize the lack of significant warming, for over 15 years. Depending on how you do [...]

Texas social studies textbooks to teach climate change doubt: ‘Scientists disagree about what is causing climate change’

Climate Depot - Mon, 09/15/2014 - 17:43
http://www.upi.com/Science_News/2014/09/15/Proposed-Texas-textbooks-teach-climate-change-skepticism/6461410802892/

Functional biogeography [Biological Sciences]

PNAS Early Edition Articles - Mon, 09/15/2014 - 13:04
Understanding, modeling, and predicting the impact of global change on ecosystem functioning across biogeographical gradients can benefit from enhanced capacity to represent biota as a continuous distribution of traits. However, this is a challenge for the field of biogeography historically grounded on the species concept. Here we focus on the...

Traits-based model of global vegetation [Environmental Sciences]

PNAS Early Edition Articles - Mon, 09/15/2014 - 13:04
Dynamic Global Vegetation Models (DGVMs) are indispensable for our understanding of climate change impacts. The application of traits in DGVMs is increasingly refined. However, a comprehensive analysis of the direct impacts of trait variation on global vegetation distribution does not yet exist. Here, we present such analysis as proof of...

Mechanisms of stray gas contamination [Environmental Sciences]

PNAS Early Edition Articles - Mon, 09/15/2014 - 13:04
Horizontal drilling and hydraulic fracturing have enhanced energy production but raised concerns about drinking-water contamination and other environmental impacts. Identifying the sources and mechanisms of contamination can help improve the environmental and economic sustainability of shale-gas extraction. We analyzed 113 and 20 samples from drinking-water wells overlying the Marcellus and...

Climate evolution and angiosperm radiation [Earth, Atmospheric, and Planetary Sciences]

PNAS Early Edition Articles - Mon, 09/15/2014 - 13:04
In 1879, Charles Darwin characterized the sudden and unexplained rise of angiosperms during the Cretaceous as an “abominable mystery.” The diversification of this clade marked the beginning of a rapid transition among Mesozoic ecosystems and floras formerly dominated by ferns, conifers, and cycads. Although the role of environmental factors has...

Temperature drives forest biomass distribution [Ecology]

PNAS Early Edition Articles - Mon, 09/15/2014 - 13:04
Whether the fraction of total forest biomass distributed in roots, stems, or leaves varies systematically across geographic gradients remains unknown despite its importance for understanding forest ecology and modeling global carbon cycles. It has been hypothesized that plants should maintain proportionally more biomass in the organ that acquires the most...

BMAL1 and fertility [Physiology]

PNAS Early Edition Articles - Mon, 09/15/2014 - 13:04
The circadian clock plays a significant role in many aspects of female reproductive biology, including estrous cycling, ovulation, embryonic implantation, onset of puberty, and parturition. In an effort to link cell-specific circadian clocks to their specific roles in female reproduction, we used the promoter that controls expression of Steroidogenic Factor-1...

Role of Foxa3 in age-associated metabolic decline [Physiology]

PNAS Early Edition Articles - Mon, 09/15/2014 - 13:04
Aging is associated with increased adiposity and diminished thermogenesis, but the critical transcription factors influencing these metabolic changes late in life are poorly understood. We recently demonstrated that the winged helix factor forkhead box protein A3 (Foxa3) regulates the expansion of visceral adipose tissue in high-fat diet regimens; however, whether...

Pulque production in Prehispanic Mesoamerica [Anthropology]

PNAS Early Edition Articles - Mon, 09/15/2014 - 13:04
Although in modern societies fermented beverages are associated with socializing, celebration, and ritual, in ancient times they were also important sources of essential nutrients and potable water. In Mesoamerica, pulque, an alcoholic beverage produced from the fermented sap of several species of maguey plants (Agavaceae; Fig. 1) is hypothesized to...

Myelomonocytic Siglecs in cancer [Medical Sciences]

PNAS Early Edition Articles - Mon, 09/15/2014 - 13:04
Certain pathogenic bacteria are known to modulate the innate immune response by decorating themselves with sialic acids, which can engage the myelomonocytic lineage inhibitory receptor Siglec-9, thereby evading immunosurveillance. We hypothesized that the well-known up-regulation of sialoglycoconjugates by tumors might similarly modulate interactions with innate immune cells. Supporting this hypothesis,...

Corticosterone pulses shape hippocampal plasticity [Neuroscience]

PNAS Early Edition Articles - Mon, 09/15/2014 - 13:04
The rodent adrenal hormone corticosterone (CORT) reaches the brain in hourly ultradian pulses, with a steep rise in amplitude before awakening. The impact of a single CORT pulse on glutamatergic transmission is well documented, but it remains poorly understood how consecutive pulses impact on glutamate receptor trafficking and synaptic plasticity....

Distribution limits of North American trees [Ecology]

PNAS Early Edition Articles - Mon, 09/15/2014 - 13:04
Using functional traits to explain species’ range limits is a promising approach in functional biogeography. It replaces the idiosyncrasy of species-specific climate ranges with a generic trait-based predictive framework. In addition, it has the potential to shed light on specific filter mechanisms creating large-scale vegetation patterns. However, its application to...

Small ncRNAs in the differentiation of Giardia [Evolution]

PNAS Early Edition Articles - Mon, 09/15/2014 - 13:04
Small RNAs (sRNAs), including microRNAs and endogenous siRNAs (endo-siRNAs), regulate most important biologic processes in eukaryotes, such as cell division and differentiation. Although sRNAs have been extensively studied in various eukaryotes, the role of sRNAs in the early emergence of eukaryotes is unclear. To address these questions, we deep sequenced...
Syndicate content