News articles tagged with 'limestone'
Algae, bacteria hogged oxygen after ancient mass extinction, slowed marine life recovery
— 28 Mar 2011 15:37 | EnvironmentA mass extinction is hard enough for Earth's biosphere to handle, but when you chase it with prolonged oxygen deprivation, the biota ends up with a hangover that can last millions of…
Giant rats lead scientists to ancient face carvings
— 11 Feb 2011 16:24 | Geology and palaeontologyAncient stone faces carved into the walls of a well-known limestone cave in East Timor have been discovered by a team searching for fossils of extinct giant rats…
Speeding up Mother Nature's very own CO2 mitigation process
— 20 Jan 2011 16:19 | EnvironmentUsing seawater and calcium to remove carbon dioxide (CO2) in a natural gas power plant's flue stream, and then pumping the resulting calcium bicarbonate in the sea, could be beneficial…
A river flipped: Humans trump nature on Texas river
— 17 Aug 2010 10:27 | EnvironmentA new study by geochemists at Rice University finds that damming and other human activity has completely obscured the natural carbon dioxide cycle in Texas' longest river, the Brazos…
Tecnalia investigates ecological cement that cuts CO2 emissions by up to 100 percent
— 17 Jul 2010 13:23 | EnvironmentThe Tecnalia Construction Unit, within the framework of its commitment to sustainability, has developed a new generation of environmentally-friendly cements that enable cutting direct…
Scientists conclude asteroid ended the age of dinosaurs
— 25 May 2010 16:33 | Geology and palaeontologyUniversity of Alaska Fairbanks scientist Michael Whalen is part of a team of distinguished scientists who recently compiled a wide swath of evidence striking a definitive blow in the…
Cave reveals Southwest's abrupt climate swings during Ice Age
— 21 Jan 2010 13:44 | EnvironmentIce Age climate records from an Arizona stalagmite link the Southwest's winter precipitation to temperatures in the North Atlantic, according to new research…
Wadden Sea, Dolomites inscribed on the World Heritage List
— 27 Jun 2009 15:06 | EnvironmentTwo new natural wonders - the Wadden Sea, on the coast of Germany and the Netherlands, and the Dolomites Mountains in Italy have been inscribed on the World Heritage List, following…
Sea urchin digging teeth are designed to stay sharp
— 4 May 2009 17:46 | BiologySea urchins dig themselves hiding holes in the limestone of the ocean floor using teeth that don't go blunt. Weizmann Institute scientists have now revealed their secrets, which might…
Google Earth aids discovery of early African mammal fossils
— 30 Apr 2009 13:33 | Geology and palaeontologyA limestone countertop, a practised eye and Google Earth all played roles in the discovery of a trove of fossils that may shed light on the origins of African wildlife…