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Littoral Combat Ship Survives Upgraded, but Still a Corvette, not a Frigate

The controversial Littoral Combat Ship dodged a big torpedo today, when outgoing Defense Secretary Chuck Hagel approved the Navy’s plan for a larger, better armed and better protected version of the ship. Critics had called for a radical redesign or an entirely new ship. Show More Summary

Southern Laurentide Ice-sheet Retreat Synchronous due to Rising Boreal Summer Insolation

Southern Laurentide ice-sheet retreat synchronous with rising boreal summer insolationAuthors:Ullman et alAbstract:Establishing the precise timing for the onset of ice-sheet retreat at the end of the Last Glacial Maximum (LGM) is critical for delineating mechanisms that drive deglaciations. Show More Summary

Ocean Roundup: UN Urges Mangrove Protection, Warming Pacific Waters Could Unlock Layer of Methane, and More

Mangroves in Florida. Protecting mangroves has been an emphasis at UN climate talks this week. (Photo: Phil's 1stPix / Flickr Creative Commons) - Authorities are concerned that oil from a two-mile long oil slick in New Jersey’s Sandy Hook Bay could threaten an endangered population of seals that migrate through the area each winter. Show More Summary

Large Scale Evidence of Water/mud in the Martian Boreal Region

Evidence for large reservoirs of water/mud in Utopia and Acidalia Planitiae on MarsAuthors: Ivanov et alAbstract:Utopia and Acidalia Planitiae show a set of similar morphologic features indicative of the presence of large reservoirs of water/mud in these regional topographic lows. Show More Summary

Chickens Domesticated at the Dawn of the Holocene Quaternary in China

Early Holocene chicken domestication in northern ChinaAuthors:Xiang et alAbstract:Chickens represent by far the most important poultry species, yet the number, locations, and timings of their domestication have remained controversial for more than a century. Show More Summary

Maastrichtian Cretaceous Dinosaur Coprolites Show Omnivory

Ostracods, plant tissues, and other inclusions in coprolites from the Late Cretaceous Lameta Formation at Pisdura, India: Taphonomical and palaeoecological implicationsAuthors:Khosla et alAbstract:A rich microbiota with distinctive plant...Show More Summary

12-12-14 J Pod on the Hydrophones

Friday, December 12th...The Center for Whale Research, Ken Balcomb, posted a preliminary report of the necropsy of J32. link here: Center for Whale Research...in the early hours this morning, J Pod woke me up with their calls over the...Show More Summary

Epic Science Raps of History – A teaser

It all started on a perfect San Diego summer night, Taco Tuesday to be exact (For those of you who don’t live in the local area, all things good in the world happen at Taco Tuesday). My friend and colleague from Scripps Institute of Oceanography, Levi Lewis, had called a meeting of the science rap braintrust, […]

Nothosaurus zhangi: a Very Large Nothosaur From Anisian China's Seas

A gigantic nothosaur (Reptilia: Sauropterygia) from the Middle Triassic of SW China and its implication for the Triassic biotic recoveryAuthors:Liu et alAbstract:The presence of gigantic apex predators in the eastern Panthalassic and...Show More Summary

Aquilops americanus, the oldest horned-dinosaur from North America

A Ceratopsian Dinosaur from the Lower Cretaceous of Western North America, and the Biogeography of Neoceratopsia. Farke, A., et al. PLoS One Abstract [edit]: An associated cranium and lower jaw from the Cloverly Formation (?middle–late...Show More Summary

Evidence of Calymmian MesoProterozoic Tidal/River Delta System From Brazil

Mesoproterozoic delta systems of the Açuruá Formation, Chapada Diamantina, BrazilAuthors:MagalhãesAbstract:Facies analysis, distinct depositional paleoflow directions and grain size ranges suggest that different fluvial systems fed coeval...Show More Summary

OA-ICC December calendar: 12/12- “To read this weekend: OA page-turners”

Count down the days until 2015 together with the OA-ICC! Each day of December you will find a short story on the OA-ICC news stream highlighting an ocean acidification project, effort, or resource. Discover today’s story below: “To read this weekend: OA page-turners” A large number of publications on ocean acidification by various international institutions […]

Sea urchins from Antarctica show adaptation to ocean acidification

A study of sea urchins from the Antarctic Peninsula has revealed an ability to adapt to changing conditions such as rising sea temperature and acidification. Writing in the Journal of Animal Ecology the authors set out to answer important and fundamental questions on how life in the ocean will respond to projected changes in the […]

Projected pH reductions by 2100 might put deep North Atlantic biodiversity at risk (update)

This study aims to evaluate the potential for impacts of ocean acidification on North Atlantic deep-sea ecosystems in response to IPCC AR5 Representative Concentration Pathways (RCPs). Deep-sea biota is likely highly vulnerable to changes in seawater chemistry and sensitive to moderate excursions in pH. Here we show, from seven fully coupled Earth system models, that […]

Ocean acidification effects on calcifying macroalgae

Since the Industrial Revolution, the partial pressure of carbon dioxide (pCO2) has been increasing and global ocean surface waters have absorbed 30% of the anthropogenic CO2 released into the atmosphere. An increase in pCO2 in surface ocean waters causes an increase in bicarbonate ions (HCO3-) and protons (H+) and a decrease in carbonate ions (CO32-), […]

Adult acclimation to combined temperature and pH stressors significantly enhances reproductive outcomes compared to short-term exposures

This study examined the effects of long-term culture under altered conditions on the Antarctic sea urchin, Sterechinus neumayeri. Sterechinus neumayeri was cultured under the combined environmental stressors of lowered pH (?0·3 and ?0·5 pH units) and increased temperature (+2 °C) for 2 years. Show More Summary

Effects of low pH stress on shell traits and proteomes of the dove snail, Anachis misera inhabiting shallow vent environments off Kueishan Islet, Taiwan

The effects of naturally acidified seawater on a snail species, Anachis misera (Family: Columbellidae) were quantified in five shallow vent-based environments off Kueishan Islet, Taiwan. An absence of Anachis snails was observed in the most acidic North site (pH 7.22), and the size structure differed among the remaining East, South, Southwest and Northwest sites. If […]

Marine ammonia-oxidizing archaeal isolates display obligate mixotrophy and wide ecotypic variation

Ammonia-oxidizing archaea (AOA) are now implicated in exerting significant control over the form and availability of reactive nitrogen species in marine environments. Detailed studies of specific metabolic traits and physicochemicalShow More Summary

How bigsmall was Aquilops?

If you’ve been reading around about Aquilops, you’ve probably seen it compared in size to a raven, a rabbit, or a cat. Where’d those comparisons come from? You’re about to find out. Back in April I ran some numbers to get a rough idea of the size of Aquilops, both for my own interest and […]

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